Live/247 Rank/Connecticut

Connecticut 24/7 Rank

Every station in Connecticut ranked by its 247 score out of 100: how reliably it reports, how accurate its readings are against a reference station, how they pass their checks and how they stand against the forecast, over the last seven days.

375 stations ranked25.3% sent every report dueranked October 16, 2026page 1 of 2Connecticut instrumentsConnecticut weather

A station is ranked once its week holds enough reports to measure: 12, or 3 days for a gauge that reports once a day. Of the 375 ranked here, 367 have a page of their own; the rest are platforms heard here that have not yet reported enough to be listed.

Every ranked station, first to last

1stLast

Each rank wears its colour: first in its state in bright green, last in deep red, and every rank between mixed along the band.

How they reported this week

The days behind it

7 days 30 days90 days

every report90 to 99%under 90%

Every station, ranked

Rank	Station	Score	Network	County	Received	Reports	Arrives in	Longest silence
1	Bridgeport/SikorskyBDR	100.0	Airport	Fairfield	100%	168 of 168	7 min	62 min
2	Oxford (AWOS)OXC	99.8	Airport	New Haven	100%	168 of 168	9 min	66 min
3	Hartford/BradleyBDL	99.7	Airport	Hartford	100%	168 of 168	8 min	60 min
4	Danbury MunicipalDXR	99.5	Airport	Fairfield	100%	168 of 168	6 min	60 min
5	Hartford/BrainardHFD	99.4	Airport	Hartford	100%	168 of 168	6 min	60 min
6	Greenwich Harbor Precipitation At Grass Island410051073373001	99.4	Gauge	Fairfield	100%	168 of 168	8 min	60 min
7	NONEWAUG RIVER AT MinortownMWNC3	99.4	Gauge	Litchfield	100%	168 of 168	10 min	60 min
8	Reference Climate StationNFKC3	99.4	Cooperative	Litchfield	100%	7 of 7	23 min	24 h
9	Sikorsky Memorial AirportBDR	99.4	Gauge	Fairfield	100%	7 of 7	25 min	24 h
9	New Haven Tweed APHVN	99.4	Gauge	New Haven	100%	7 of 7	25 min	24 h
11	Shelton 1.7 WSWCT-FR-123	99.4	Volunteer	Fairfield	100%	7 of 7	26 min	24 h
11	North Canton 0.8 SSWCT-HR-28	99.4	Volunteer	Hartford	100%	7 of 7	26 min	24 h
11	Newington 1.9 SSWCT-HR-65	99.4	Volunteer	Hartford	100%	7 of 7	26 min	24 h
11	North Granby 1.3 ENECT-HR-8	99.4	Volunteer	Hartford	100%	7 of 7	26 min	24 h
11	Central Waterford 2.7 SSWCT-NL-22	99.4	Volunteer	New London	100%	7 of 7	26 min	24 h
11	Mystic 3.4 NWCT-NL-46	99.4	Volunteer	New London	100%	7 of 7	26 min	24 h
11	Somers 1.2 NECT-TL-49	99.4	Volunteer	Tolland	100%	7 of 7	26 min	24 h
18	Stamford 1.0 SCT-FR-105	99.4	Volunteer	Fairfield	100%	7 of 7	26 min	25 h
19	Sherman 1.2 ECT-FR-113	99.4	Volunteer	Fairfield	100%	7 of 7	26 min	24 h
19	Darien 2.4 NWCT-FR-83	99.4	Volunteer	Fairfield	100%	7 of 7	26 min	24 h
19	New Hartford Center 1.7 SSWCT-LT-21	99.4	Volunteer	Litchfield	100%	7 of 7	26 min	24 h
19	New Milford 5.3 SSWCT-LT-22	99.4	Volunteer	Litchfield	100%	7 of 7	26 min	24 h
19	Higganum 0.7 NCT-MD-23	99.4	Volunteer	Middlesex	100%	7 of 7	26 min	24 h
19	Middlefield 1.4 WCT-MD-38	99.4	Volunteer	Middlesex	100%	7 of 7	26 min	24 h
25	Norwalk 3.2 NCT-FR-124	99.4	Volunteer	Fairfield	100%	7 of 7	26 min	24 h
25	West Hartford 0.5 ESECT-HR-135	99.4	Volunteer	Hartford	100%	7 of 7	26 min	24 h
25	North Branford 1.1 ENECT-NH-103	99.4	Volunteer	New Haven	100%	7 of 7	26 min	24 h
28	GuilfordGULC3	99.4	Cooperative	New Haven	100%	7 of 7	63 min	24 h
29	NorwichNRWC3	99.4	Cooperative	New London	100%	7 of 7	83 min	24 h
30	Salmon Brook 4.9 WSWCT-HR-132	99.4	Volunteer	Hartford	100%	7 of 7	85 min	24 h
30	Durham 1.2 WCT-MD-24	99.4	Volunteer	Middlesex	100%	7 of 7	85 min	24 h
30	Ledyard 0.5 NECT-NL-80	99.4	Volunteer	New London	100%	7 of 7	85 min	24 h
33	Wallingford Center 3.3 NNWCT-NH-43	99.4	Volunteer	New Haven	100%	7 of 7	85 min	25 h
33	East Killingly 1.3 SWCT-WN-4	99.4	Volunteer	Windham	100%	7 of 7	85 min	25 h
35	Wethersfield 1.2 WSWCT-HR-6	99.4	Volunteer	Hartford	100%	7 of 7	86 min	24 h
36	Canaan 4.2 ESECT-LT-28	99.4	Volunteer	Litchfield	100%	7 of 7	86 min	24 h
36	New Hartford Center 3.2 SWCT-LT-9	99.4	Volunteer	Litchfield	100%	7 of 7	86 min	24 h
36	Columbia 2.6 SCT-TL-54	99.4	Volunteer	Tolland	100%	7 of 7	86 min	24 h
39	Berlin 1.1 SECT-HR-149	99.4	Volunteer	Hartford	100%	7 of 7	86 min	25 h
40	Trumbull 2.6 SSECT-FR-106	99.4	Volunteer	Fairfield	100%	7 of 7	86 min	26 h
41	Niantic 1.1 SWCT-NL-32	99.4	Volunteer	New London	100%	7 of 7	86 min	24 h
41	Old Lyme 3.4 ESECT-NL-38	99.4	Volunteer	New London	100%	7 of 7	86 min	24 h
41	Colchester 0.6 ENECT-NL-70	99.4	Volunteer	New London	100%	7 of 7	86 min	24 h
41	Vernon 3.0 NNECT-TL-59	99.4	Volunteer	Tolland	100%	7 of 7	86 min	24 h
45	Madison 6.3 NNWCT-NH-100	99.4	Volunteer	New Haven	100%	7 of 7	86 min	25 h
45	Staffordville 0.4 NNWCT-TL-2	99.4	Volunteer	Tolland	100%	7 of 7	86 min	25 h
47	Manchester 0.4 ENECT-HR-100	99.4	Volunteer	Hartford	100%	7 of 7	86 min	26 h
47	Colchester 5.5 NNECT-NL-74	99.4	Volunteer	New London	100%	7 of 7	86 min	26 h
49	Bethel 3.5 NNECT-FR-41	99.4	Volunteer	Fairfield	100%	7 of 7	86 min	27 h
50	Griswold 0.9 NCT-NL-21	99.4	Volunteer	New London	100%	7 of 7	86 min	24 h
51	Cromwell 2.6 NCT-MD-46	99.4	Volunteer	Middlesex	100%	7 of 7	86 min	25 h
52	CT-FR-126CT-FR-126	99.4	COCORAHS	-	100%	7 of 7	86 min	24 h
52	Plainville 1.6 SCT-HR-154	99.4	Volunteer	Hartford	100%	7 of 7	86 min	24 h
52	Suffield Depot 3.3 NNECT-HR-57	99.4	Volunteer	Hartford	100%	7 of 7	86 min	24 h
52	Suffield 0.5 NNECT-HR-82	99.4	Volunteer	Hartford	100%	7 of 7	86 min	24 h
52	New Milford 3.1 WNWCT-LT-37	99.4	Volunteer	Litchfield	100%	7 of 7	86 min	24 h
52	Madison Center 1.6 WNWCT-NH-88	99.4	Volunteer	New Haven	100%	7 of 7	86 min	24 h
52	East Lyme 0.5 SWCT-NL-29	99.4	Volunteer	New London	100%	7 of 7	86 min	24 h
52	Willington 2.7 SECT-TL-27	99.4	Volunteer	Tolland	100%	7 of 7	86 min	24 h
52	Canterbury 0.4 SCT-WN-29	99.4	Volunteer	Windham	100%	7 of 7	86 min	24 h
61	New London 1.0 NNWCT-NL-6	99.4	Volunteer	New London	100%	7 of 7	86 min	25 h
62	New Harford 1E - Nepaug RiverBAKC3	99.4	Cooperative	Litchfield	100%	7 of 7	1.5 h	24 h
63	NFKC3NFKC3	99.4	DCP	-	100%	7 of 7	1.6 h	24 h
64	MDDC3MDDC3	99.4	DCP	-	100%	7 of 7	1.9 h	24 h
65	Windsor 1.4 SSWCT-HR-124	99.4	Volunteer	Hartford	100%	7 of 7	2.4 h	24 h
65	Mystic 1.6 WCT-NL-37	99.4	Volunteer	New London	100%	7 of 7	2.4 h	24 h
65	Somersville 0.2 ENECT-TL-35	99.4	Volunteer	Tolland	100%	7 of 7	2.4 h	24 h
68	Warren 2.4 WNWCT-LT-20	99.4	Volunteer	Litchfield	100%	7 of 7	2.4 h	24 h
69	Prospect 0.5 SWCT-NH-22	99.4	Volunteer	New Haven	100%	7 of 7	2.4 h	24 h
70	StafordvilleSFVC3	99.4	Cooperative	Tolland	100%	7 of 7	-	24 h
71	New Haven/TweedHVN	99.0	Airport	New Haven	100%	168 of 168	6 min	60 min
72	Woodbury Center 1.5 SSWCT-LT-34	98.9	Volunteer	Litchfield	100%	7 of 7	3.4 h	24 h
72	CT-NH-57CT-NH-57	98.9	COCORAHS	-	100%	7 of 7	3.4 h	24 h
74	Bethel 0.5 ECT-FR-43	98.9	Volunteer	Fairfield	100%	7 of 7	3.4 h	36 h
75	Woodstock 0.5 NCT-WN-28	98.9	Volunteer	Windham	100%	7 of 7	3.4 h	24 h
76	Willimantic (ASOS)IJD	98.7	Airport	Windham	100%	168 of 168	7 min	60 min
77	Groton/New LondonGON	98.6	Airport	New London	100%	168 of 168	13 min	68 min
78	Meriden Markham Muni AirportMMK	98.5	Airport	New Haven	100%	168 of 168	6 min	60 min
79	Rocky Hill 1.3 ECT-HR-68	98.5	Volunteer	Hartford	100%	7 of 7	4.4 h	24 h
80	Long Island Sound AT StamfordSTDC3	98.3	Gauge	Fairfield	99.7%	335 of 336	15 min	60 min
81	Essex - Connecticut RiverESXC3	98.2	Gauge	Middlesex	99.4%	167 of 168	15 min	2 h
81	Stony Brook Near West SuffieldSTBC3	98.2	Gauge	Hartford	99.4%	167 of 168	15 min	2 h
83	Enfield 1.5 SECT-HR-5	98.0	Volunteer	Hartford	100%	7 of 7	5.4 h	24 h
84	BurlingtonBLGC3	98.0	Gauge	Hartford	98.8%	166 of 168	15 min	2 h
85	Natchaug River AT ChaplinCHAC3	98.0	Gauge	Windham	98.8%	166 of 168	15 min	2 h
86	Connecticut River AT Middle HaddamMHDC3	97.6	Gauge	Middlesex	100%	168 of 168	19 min	67 min
87	Salmon Creek Near Lime RockLRKC3	97.6	Gauge	Litchfield	97.6%	164 of 168	15 min	2 h
87	Pomperaug River AT SouthburySBYC3	97.6	Gauge	New Haven	97.6%	164 of 168	15 min	2 h
89	Colebrook River LakeCRLC3	97.5	Gauge	Litchfield	99.4%	167 of 168	18 min	2 h
90	Farmington River AT TariffvilleTARC3	97.4	Gauge	Hartford	100%	168 of 168	20 min	60 min
91	Old LymeLYMC3	97.4	Gauge	New London	100%	168 of 168	20 min	67 min
92	Still River AT BrookfieldBKFC3	97.4	Gauge	Fairfield	100%	168 of 168	20 min	77 min
92	Pendleton Hill Brook AT Clarks FallsPHBC3	97.4	Gauge	New London	100%	168 of 168	20 min	77 min
92	Quinnipiac River AT SouthingtonQPCC3	97.4	Gauge	Hartford	100%	168 of 168	20 min	77 min
92	Stamford - Rippowam RiverRIPC3	97.4	Gauge	Fairfield	100%	168 of 168	20 min	77 min
96	Sandy Hook - Pootatuck RiverPOOC3	97.4	Gauge	Fairfield	97.0%	163 of 168	15 min	2 h
97	WoodvilleWDVC3	97.3	Gauge	Litchfield	99.4%	167 of 168	19 min	2 h
98	Yantic River AT YanticYTCC3	97.2	Gauge	New London	99.4%	167 of 168	20 min	1.8 h
99	Salmon River 4 SE East HamptonEHMC3	97.2	Gauge	Middlesex	99.4%	167 of 168	20 min	2 h
99	MansfieldFENC3	97.2	Gauge	Tolland	99.4%	167 of 168	20 min	2 h
99	Housatonic River AT Falls VillageFLVC3	97.2	Gauge	Litchfield	99.4%	167 of 168	20 min	2 h
99	WEEKEEPEEMEE RIVER AT HotchkissvilleHKVC3	97.2	Gauge	Litchfield	99.4%	167 of 168	20 min	2 h
99	MansfieldMANC3	97.2	Gauge	Tolland	99.4%	167 of 168	20 min	2 h
104	Willimantic River AT CoventryCVTC3	97.2	Gauge	Tolland	99.4%	167 of 168	20 min	2 h
105	Old Saybrook 2.9 NNECT-MD-45	97.1	Volunteer	Middlesex	100%	7 of 7	7.4 h	24 h
106	Salem 3.6 SECT-NL-62	97.1	Volunteer	New London	100%	7 of 7	7.4 h	24 h
107	North Grosvenordale - French RiverGRVC3	97.0	Gauge	Windham	98.8%	166 of 168	20 min	2 h
107	Mount Hope River 1 AT WarrenvilleWRNC3	97.0	Gauge	Windham	98.8%	166 of 168	20 min	2 h
109	Byram River Precipitation At Pemberwick410138073394201	96.8	Gauge	Fairfield	100%	168 of 168	23 min	60 min
109	Ma-Sjw 58R Sheffield Gw Met Station420350073193600	96.8	Gauge	Litchfield	100%	168 of 168	23 min	60 min
111	WEST BR FARMINGTON AT RivertonRVRC3	96.6	Gauge	Litchfield	100%	168 of 168	24 min	1.5 h
112	Connecticut River AT HartfordHFDC3	96.5	Gauge	Hartford	100%	168 of 168	25 min	62 min
112	Hop Brook 5 S Hop Brook LakeUNCC3	96.5	Gauge	New Haven	100%	168 of 168	25 min	62 min
114	Connecticut River AT ThompsonvilleTMVC3	96.5	Gauge	Hartford	100%	168 of 168	25 min	60 min
115	Bridgeport - 8467150BRHC3	96.5	Gauge	Fairfield	99.0%	832 of 840	18 min	48 min
116	New Haven - 8465705NWHC3	96.5	Gauge	New Haven	98.9%	831 of 840	18 min	48 min
117	Robertsville - Still RiverRBVC3	96.4	Gauge	Litchfield	99.4%	167 of 168	24 min	2 h
118	Quinebaug River 2 SSW West Thompson LakeWTHC3	96.3	Gauge	Windham	99.4%	167 of 168	25 min	1.5 h
119	Shetucket River AT WillimanticWLMC3	96.3	Gauge	Windham	99.4%	167 of 168	25 min	2 h
120	Thomaston Rsvr DamTMSC3	96.3	Gauge	Litchfield	99.4%	167 of 168	25 min	1.5 h
120	Naugatuck River Below ThomastonTMTC3	96.3	Gauge	Litchfield	99.4%	167 of 168	25 min	1.5 h
120	BRANCH BROOK AT Black Rock LakeTRBC3	96.3	Gauge	Litchfield	99.4%	167 of 168	25 min	1.5 h
123	Naugatuck River AT Beacon FallsBEAC3	96.3	Gauge	New Haven	99.4%	167 of 168	25 min	2 h
123	NORTHFIELD BROOK AT Northfield Br LakeNBLC3	96.3	Gauge	Litchfield	99.4%	167 of 168	25 min	2 h
123	Quinebaug River AT PutnamPUTC3	96.3	Gauge	Windham	99.4%	167 of 168	25 min	2 h
126	Mad River RsvrWINC3	96.2	Gauge	Litchfield	99.4%	167 of 168	25 min	1.5 h
126	Natchaug River 1 NE Ntchg WillimanticWMNC3	96.2	Gauge	Windham	99.4%	167 of 168	25 min	1.5 h
128	Naugatuck River AT WaterburyWATC3	96.2	Gauge	New Haven	99.4%	167 of 168	25 min	1.8 h
129	Hockanum River 3 AT East HartfordEHDC3	96.2	Gauge	Hartford	99.4%	167 of 168	25 min	2 h
129	Hall Meadow DamHMDC3	96.2	Gauge	Litchfield	99.4%	167 of 168	25 min	2 h
129	Hop Brook Lake TailwaterHOPC3	96.2	Gauge	New Haven	99.4%	167 of 168	25 min	2 h
129	Quinebaug River AT Jewett CityJCYC3	96.2	Gauge	New London	99.4%	167 of 168	25 min	2 h
129	Natchaug River 2 SW Mansfield Hollow LkMFDC3	96.2	Gauge	Windham	99.4%	167 of 168	25 min	2 h
129	Shields Lake - Ridgefield BrookRIDC3	96.2	Gauge	Fairfield	99.4%	167 of 168	25 min	2 h
129	Farmington River AT SimsburySIMC3	96.2	Gauge	Hartford	99.4%	167 of 168	25 min	2 h
129	Housatonic River AT Stevenson DamSTVC3	96.2	Gauge	New Haven	99.4%	167 of 168	25 min	2 h
129	East Branch Rsvr DamTORC3	96.2	Gauge	Litchfield	99.4%	167 of 168	25 min	2 h
129	Farmington River AT UnionvilleUNVC3	96.2	Gauge	Hartford	99.4%	167 of 168	25 min	2 h
139	HanoverHNOC3	96.0	Gauge	Windham	95.8%	161 of 168	20 min	2 h
140	Housatonic River AT GaylordsvilleGAYC3	95.9	Gauge	Fairfield	98.2%	165 of 168	24 min	2 h
140	QuinebaugQBGC3	95.9	Gauge	Windham	98.2%	165 of 168	24 min	2 h
142	West Hartland - Hubbard BrookWHTC3	95.8	Gauge	Hartford	98.2%	165 of 168	25 min	2 h
143	New London Harbor (IN MLLW)NLHC3	95.6	Gauge	New London	99.0%	832 of 840	23 min	48 min
144	Harrisville - Little RiverHARC3	95.3	Gauge	Windham	99.4%	167 of 168	30 min	2 h
145	Broad Brook AT Broad BrookBROC3	94.8	Gauge	Hartford	98.2%	165 of 168	30 min	2 h
146	CDWC3CDWC3	94.4	DCP	-	85.7%	6 of 7	15 min	37 h
146	LLIC3LLIC3	94.4	DCP	-	85.7%	6 of 7	15 min	37 h
146	ZORC3ZORC3	94.4	DCP	-	85.7%	6 of 7	15 min	37 h
149	Wallingford Center 1.9 WNWCT-NH-44	94.4	Volunteer	New Haven	85.7%	6 of 7	26 min	24 h
150	Kensington 0.4 NCT-HR-145	94.4	Volunteer	Hartford	85.7%	6 of 7	26 min	37 h
151	Norwich 5.4 SECT-NL-50	94.4	Volunteer	New London	85.7%	6 of 7	85 min	2 days
152	Farmington 4.9 WSWCT-HR-41	94.4	Volunteer	Hartford	85.7%	6 of 7	85 min	2 days
153	Pawcatuck 1.8 SSECT-NL-40	94.4	Volunteer	New London	85.7%	6 of 7	86 min	24 h
154	Waterford 2.3 SCT-NL-71	94.4	Volunteer	New London	85.7%	6 of 7	86 min	2 days
155	Brookfield 3.3 SSECT-FR-9	94.4	Volunteer	Fairfield	85.7%	6 of 7	86 min	37 h
156	Old Lyme 1.7 NNECT-NL-63	94.4	Volunteer	New London	85.7%	6 of 7	86 min	2 days
157	West Thompson Lake / USCOE DamWTPC3	94.4	Cooperative	Windham	85.7%	6 of 7	1.9 h	2 days
158	Mansfield Center 2.7 NECT-TL-30	94.4	Volunteer	Tolland	85.7%	6 of 7	2.4 h	2 days
159	Prospect 1.9 ENECT-NH-14	94.4	Volunteer	New Haven	85.7%	6 of 7	2.4 h	37 h
160	New Hartford Center 1.5 NCT-LT-18	93.9	Volunteer	Litchfield	85.7%	6 of 7	3.4 h	2 days
161	Ridgefield 2.4 NNECT-FR-99	93.9	Volunteer	Fairfield	85.7%	6 of 7	3.4 h	2 days
162	Southwood Acres 0.3 WSWCT-HR-106	93.9	Volunteer	Hartford	85.7%	6 of 7	3.4 h	37 h
163	Amston 1.7 NCT-TL-57	93.5	Volunteer	Tolland	85.7%	6 of 7	4.4 h	38 h
164	WINDSOR - 91SB - At Rt 75CT038	93.0	Road	Hartford	96.1%	323 of 336	28 min	2.4 h
165	New Canaan 3.8 NCT-FR-59	93.0	Volunteer	Fairfield	85.7%	6 of 7	5.4 h	47 h
166	SHARON - Sharon Valley Rd - Shar CT US CTDOTCT032	92.8	Road	Litchfield	95.5%	321 of 336	28 min	2.4 h
167	NEW MILFORD - US Hwy 7 NB - Kent CT US CTDOTCT003	92.7	Road	Litchfield	96.4%	324 of 336	28 min	2.7 h
168	MANSFIELD - 6WB - East of Mansfi CT US CTDOTCT035	92.7	Road	Tolland	95.2%	320 of 336	28 min	2.3 h
169	THOMPSON - I395SB - At Exit 99CT006	92.6	Road	Windham	96.1%	323 of 336	28 min	2.7 h
170	NORWICH - I395NB - At Exit 83CT026	92.5	Road	New London	95.8%	322 of 336	28 min	2.7 h
171	MIDDLEBURY- I84WB - South of Sou CT US CTDOTCT015	92.5	Road	New Haven	95.8%	322 of 336	28 min	2.7 h
171	ENFIELD - I91SB - at Exit 48CT022	92.5	Road	Hartford	95.8%	322 of 336	28 min	2.7 h
171	OLD SAYBROOK - I95SB West End of CT US CTDOTCT027	92.5	Road	Middlesex	95.8%	322 of 336	28 min	2.7 h
171	PLAINFIELD - I395NB - At Plainfi CT US CTDOTCT028	92.5	Road	Windham	95.8%	322 of 336	28 min	2.7 h
171	UNION - I84WB - At Weigh Station CT US CTDOTCT037	92.5	Road	Tolland	95.8%	322 of 336	28 min	2.7 h
176	Winsted 3.8 ESECT-LT-43	92.5	Volunteer	Litchfield	85.7%	6 of 7	6.4 h	2 days
177	Newtown 5.3 SCT-FR-96	92.5	Volunteer	Fairfield	85.7%	6 of 7	6.4 h	24 h
178	Waterford 1.1 ECT-NL-60	92.5	Volunteer	New London	85.7%	6 of 7	6.4 h	36 h
179	NORTH CANAAN - Rt44 WB East of C CT US CTDOTCT017	92.4	Road	Litchfield	95.5%	321 of 336	28 min	2.7 h
180	EAST HARTFORD - I384WB - OP to I CT US CTDOTCT001	92.4	Road	Hartford	95.5%	321 of 336	28 min	2.7 h
181	ChesterSNC	92.4	Airport	Middlesex	88.8%	448 of 504	4 min	2.7 h
182	LEBANON - Rt2WB - In Median West CT US CTDOTCT005	92.2	Road	New London	94.9%	319 of 336	28 min	2.7 h
183	Plainville4B8	92.2	Airport	Hartford	89.0%	449 of 504	4 min	3 h
184	GREENWICH - I95NB - Exit 4CT023	92.1	Road	Fairfield	95.8%	322 of 336	28 min	2.7 h
185	Plainville 1.7 SWCT-HR-83	92.1	Volunteer	Hartford	85.7%	6 of 7	7.4 h	2 days
186	MADISON- I95SB - West of x62CT033	91.6	Road	New Haven	95.8%	322 of 336	28 min	2.7 h
187	MILFORD - Rt15SB - Sikorsky Brid CT US CTDOTCT010	90.9	Road	New Haven	96.4%	324 of 336	28 min	2.7 h
188	FAIRFIELD - I95SB - at Exit 21CT008	90.9	Road	Fairfield	95.8%	322 of 336	28 min	2.8 h
189	NORFOLK - Rt44WB - Greenwoods Ro CT US CTDOTCT016	90.7	Road	Litchfield	92.5%	311 of 336	28 min	3.3 h
190	SALEM - Rt82 at Salem Salt Shed CT US CTDOTCT030	90.6	Road	New London	96.1%	323 of 336	28 min	2.7 h
191	Coginchaug River AT CoginchaugCOGC3	90.5	Gauge	Middlesex	88.8%	199 of 224	35 min	62 min
192	South Windsor 1.1 NECT-HR-155	90.2	Volunteer	Hartford	85.7%	6 of 7	11.4 h	2 days
193	NEWINGTON - Rt15NB - Berlin Tpke CT US CTDOTCT021	90.0	Road	Hartford	88.6%	298 of 336	28 min	2.7 h
194	Vernon 1.6 NCT-TL-50	89.8	Volunteer	Tolland	85.7%	6 of 7	12.4 h	38 h
195	SEYMOUR - Rt8NB - On ramp from R CT US CTDOTCT018	89.7	Road	New Haven	95.8%	322 of 336	28 min	2.7 h
196	Willimantic 1.3 SSECT-WN-31	89.4	Volunteer	Windham	71.4%	5 of 7	26 min	3 days
197	Middletown 1.3 WNWCT-MD-49	89.4	Volunteer	Middlesex	71.4%	5 of 7	26 min	24 h
198	Southington 1.7 WNWCT-HR-55	89.4	Volunteer	Hartford	71.4%	5 of 7	26 min	2.5 days
199	Northford 0.8 SWCT-NH-72	89.4	Volunteer	New Haven	71.4%	5 of 7	26 min	3 days
200	Woodbury Center 0.6 SWCT-LT-57	89.4	Volunteer	Litchfield	71.4%	5 of 7	86 min	3 days
201	Willimantic 3.8 SWCT-TL-42	89.4	Volunteer	Tolland	71.4%	5 of 7	2.4 h	2 days
202	NORTH HAVEN - Rt15NB - At Rest A CT US CTDOTCT024	89.2	Road	New Haven	96.1%	323 of 336	28 min	2.7 h
203	CHESHIRE - I84WB - At Exit 26CT020	89.2	Road	New Haven	86.3%	290 of 336	28 min	2.7 h
204	Derby 1.0 SSECT-NH-102	88.9	Volunteer	New Haven	71.4%	5 of 7	3.4 h	2 days
205	Ridgefield 3.6 NCT-FR-58	88.9	Volunteer	Fairfield	71.4%	5 of 7	3.4 h	2 days
206	GREENWICH - Rt15SB - Greenwich S CT US CTDOTCT009	88.6	Road	Fairfield	96.1%	323 of 336	28 min	2.7 h
207	HADDAM - 9SB - At Exit 8CT031	88.5	Road	Middlesex	96.1%	323 of 336	28 min	2.7 h
208	Waterbury 1.3 WNWCT-NH-67	88.5	Volunteer	New Haven	71.4%	5 of 7	4.4 h	37 h
209	Guilford Center 2.7 WSWCT-NH-56	88.4	Volunteer	New Haven	85.7%	6 of 7	15.4 h	36 h
210	South Kent 0.1 SECT-LT-51	87.9	Volunteer	Litchfield	85.7%	6 of 7	16.4 h	38 h
211	Southington 0.9 SSECT-HR-23	87.5	Volunteer	Hartford	71.4%	5 of 7	6.4 h	3 days
212	South Windsor 2.4 SSECT-HR-129	87.5	Volunteer	Hartford	71.4%	5 of 7	6.4 h	2 days
213	MERIDEN - I691EB At Exit 8CT040	87.2	Road	New Haven	96.1%	323 of 336	28 min	2.7 h
214	Granby 1.2 NWCT-HR-130	87.1	Volunteer	Hartford	71.4%	5 of 7	7.4 h	24 h
215	Shelton 1.3 WCT-FR-108	87.1	Volunteer	Fairfield	71.4%	5 of 7	7.4 h	36 h
216	Moosup 1.7 NECT-WN-8	87.0	Volunteer	Windham	85.7%	6 of 7	18.4 h	38 h
217	Shelton 1.3 WCT-FR-23	86.6	Volunteer	Fairfield	71.4%	5 of 7	8.4 h	3 days
218	Cornwall 2.8 SWCT-LT-53	86.6	Volunteer	Litchfield	71.4%	5 of 7	8.4 h	2.5 days
219	Danielson 3.2 ESECT-WN-26	86.1	Volunteer	Windham	71.4%	5 of 7	9.4 h	37 h
220	TORRINGTON - Rt8 SB - Median Sou CT US CTDOTCT019	85.8	Road	Litchfield	76.9%	267 of 347	28 min	2.7 h
221	NEW HAVEN - I95SB - At Fulton Te CT US CTDOTCT011	85.7	Road	New Haven	78.6%	273 of 347	28 min	2.4 h
222	MIDDLETOWN - RT9NB - On ramp fro CT US CTDOTCT002	85.5	Road	Middlesex	76.0%	264 of 347	28 min	2.7 h
223	Chester Center 2.7 WNWCT-MD-30	85.2	Volunteer	Middlesex	71.4%	5 of 7	11.4 h	2 days
224	Stratford 0.2 ESECT-FR-46	84.8	Volunteer	Fairfield	71.4%	5 of 7	12.4 h	2 days
225	Citizen station DW9759DW9759	84.8	Citizen	Litchfield	62.7%	74 of 118	19 s	6.9 h
226	GROTON - I95WB - In Median East CT US CTDOTCT004	84.5	Road	New London	77.2%	268 of 347	28 min	2.7 h
227	Moodus 0.7 SSWCT-MD-41	84.4	Volunteer	Middlesex	57.1%	4 of 7	26 min	2 days
228	Suffield Depot 6.0 WNWCT-HR-88	84.4	Volunteer	Hartford	57.1%	4 of 7	86 min	24 h
229	New Canaan 1.9 ENECT-FR-3	84.4	Volunteer	Fairfield	57.1%	4 of 7	2.4 h	2.5 days
230	Citizen station N1HUIN1HUI	84.0	Citizen	New Haven	62.2%	209 of 336	17 s	3 h
231	AVON - Rt44WB - Avon Mountain Rd CT US CTDOTCT013	83.9	Road	Hartford	78.3%	272 of 347	28 min	2.7 h
232	Norwalk 1.4 ENECT-FR-66	83.9	Volunteer	Fairfield	57.1%	4 of 7	26 min	3.5 days
233	Broad Brook 2.6 ESECT-TL-26	83.9	Volunteer	Tolland	57.1%	4 of 7	86 min	3.5 days
234	Pawcatuck 0.8 SECT-NL-52	83.9	Volunteer	New London	57.1%	4 of 7	2.4 h	3.5 days
235	Killingworth 2.6 ESECT-MD-21	83.9	Volunteer	Middlesex	57.1%	4 of 7	3.4 h	24 h
236	Citizen station DW9837DW9837	83.8	Citizen	New London	63.1%	106 of 168	19 s	5.5 h
237	Glastonbury Center 4.2 ENECT-HR-126	83.8	Volunteer	Hartford	57.1%	4 of 7	85 min	3.6 days
238	Citizen station CW1532CW1532	83.7	Citizen	New London	61.3%	103 of 168	16 s	6 h
239	StorrsSTRC3	83.5	Cooperative	Tolland	57.1%	4 of 7	32 min	4 days
240	Stonington 0.5 NNECT-NL-18	83.5	Volunteer	New London	57.1%	4 of 7	86 min	4 days
241	Citizen station K1ICK1IC	83.3	Citizen	Fairfield	62.3%	157 of 252	16 s	5 h
242	Citizen station GW6020GW6020	83.3	Citizen	Fairfield	61.3%	309 of 504	18 s	1.9 h
243	Citizen station EW5186EW5186	83.3	Citizen	New Haven	57.7%	97 of 168	19 s	4.5 h
244	UNION - Route 171 at Bigelow Hol CT US CTDOTCT041	82.8	Road	Tolland	66.8%	337 of 504	22 min	2.3 h
245	Citizen station DW6554DW6554	82.8	Citizen	Windham	64.2%	108 of 168	19 s	4.5 h
246	Citizen station GW3876GW3876	82.8	Citizen	New London	58.9%	99 of 168	16 s	6 h
247	Citizen station N1DNEN1DNE	82.5	Citizen	Hartford	59.5%	150 of 252	17 s	4.8 h
248	Farmington 1.6 SWCT-HR-39	82.5	Volunteer	Hartford	57.1%	4 of 7	4.4 h	4 days
249	Citizen station CW0811CW0811	82.3	Citizen	Hartford	58.9%	99 of 168	14 s	5.8 h
250	Citizen station DW2428DW2428	82.2	Citizen	Middlesex	60.1%	606 of 1,008	17 s	78 min

How a station is ranked

The 247 Rank answers one question about a weather station: can its readings be relied on? A station has to deliver: its reports arrive when due, soon, without long silences. And its readings have to be right: close to a trusted station nearby, passing their checks, and in step with the weather the forecast and its neighbours confirm.

The 247 score

Storm Station's poller asks every network on its own schedule, around the clock, and keeps the time of every report it hears; the reference comparison and the forecast engine keep the rest. From the last seven days of that record each station is scored out of 100 on six parts, and its 247 score is their weighted mean:

Reports receivedweight 35The share of its scheduled reports received. A station that sends every 5 minutes is due 2,016 reports in a week; one that reports once a day is due 7. Each report is counted in a slot centred on the station's own report time, so a report a minute early or late is still on time, and the week ends an hour back, so a report still on its way is never counted missed.Full marks: 100% received. No marks: none received.
Arrivalweight 10The median time its reports took to arrive from the moment a reading was taken to the moment it reached Storm Station.Full marks: within 10 minutes, or a tenth of its schedule for a station that reports less often. No marks: an hour, or its whole schedule.
Continuityweight 10Its longest silence against its own schedule, so a daily gauge is not marked down for a day between reports.Full marks: a silence of 3 reports or less. No marks: 72 reports, falling evenly on a log scale between.
Accuracyweight 20How closely its temperature follows its reference station the nearest airport or climate reference station that reported within half an hour, up to 15 miles away, reading by reading; an airfield is compared with the nearest other airport, never its own report. A steady offset is taken out, and where both heights are known only the offset beyond 3 F that the height difference does not explain is counted.Full marks: within 1.5 F, allowing 0.1 F more for each mile to the reference. No marks: 6.5 F beyond that.
Instrument checksweight 15The share of its readings that pass a check. For an airfield, the check the forecast engine runs the next day: each reading against the stations around it, as weather services check their own. For any other station, a reading 20 F or more from its reference fails, unless the two stand 3,000 ft or more apart.Full marks: none failed. No marks: 5% failed.
Forecast checkweight 10How closely its temperature matched Storm Station's forecast for the same hours, checked the next day, for every airfield the forecast engine scores. A station whose readings stray far from a forecast its neighbours confirm is one to doubt.Full marks: within 2 F on average. No marks: 8 F.

A part is scored once the week holds 24 readings or comparisons for it. A part that cannot be measured where a station stands counts at the middle of its state's measured stations, so the station is neither lifted nor sunk by it. A part measured nowhere in the state is left out, and the others carry its weight.

From score to rank

Each state's stations are ranked by their score, to the tenth. At an equal score the longer record comes first: a station that sent 2,016 of 2,016 reports has shown more than one that sent 7 of 7. Then the faster arrival, then the shorter silence. Ties on all of them share a rank, as a race is scored: three stations tied for third are all third, and the next is sixth.

A station is ranked once its week holds enough reports to measure: 12, or 3 days for a gauge that reports once a day. The rank is made again every day, so a station that falls silent or starts to read wrong drops, and one that recovers climbs back. Every page shows the same ranking: a station's rank here, in its state's list and on its own page come from one run, and a new run reaches them together. Each station's page shows its score part by part, with the figures behind each.

The same figures as data

/api/ranks for a state and /api/rank for one station, its score in parts; the developer page has every field.