Every instrument close enough to be worth naming, how far away it is, how high it stands, and what kind of measurement it makes.
What the snow tracker reads here
Every instrument in this state
-in
Snow on the ground
Station charts
Sidney Report
Rank 723 of 1,053 in Montana, Oct 16. The 247 rank orders a state's stations by their 247 score out of 100: how reliably they report, how accurate their readings are against a reference station, how their readings pass their checks, and how they stand against the forecast.
Ranking Statistics
247 score85.3of 100
Montana median
91.1the median score of 1,053 stations
Scoring higher
722stations in Montana
Sharing its score
1no other station
Points deducted
14.78.5 arrival, 2.6 accuracy, 2.1 forecast check, 1.5 reports received
Counted at the median
Forecast checknot measured at this station; Montana median 78.7
CHTM8rank 724; behind on 247 score 85.3 against 85.2
Equal scores are ordered by the share of scheduled reports received, then the reports due in the week (the longer record first), then the median arrival, then the longest silence.
Reports receivedweight 3595.833.5 of 35 pointsMontana median 98.8161 of 168 scheduled reports received in 7 days
Arrivalweight 1015.01.5 of 10 pointsMontana median 80.4half its reports arrived within 53 min
Continuityweight 10100.010.0 of 10 pointsMontana median 100.0longest silence 2 h, on a schedule of one report every 60 min
Accuracyweight 2087.217.4 of 20 pointsMontana median 86.7its temperature against the airport station KSDY, 5.3 miles away, over 147 readings: typical difference 2.9 °F beyond a steady offset of +0.0 °F
Instrument checksweight 15100.015.0 of 15 pointsMontana median 100.00 of 147 readings failed their check against its reference station
Forecast checkweight 10-7.9 of 10 points, at the medianMontana median 78.7-
The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.
How each part is scored
Reports received
Full marks for every scheduled report received, none for none, in proportion between
Arrival
Full marks for a median arrival within 10 min, none at 60 min
Continuity
Full marks for a longest silence of 3 reports or less (3 h), none for 72 (72 h)
Accuracy
Full marks within 2.0 °F of its reference, typically, none beyond 8.5 °F
Instrument checks
Full marks for no reading failed, none for 5 per cent or more
Forecast check
Full marks within 2 °F of the forecast on average, none at 8 °F
+0.9 °Fwarmer than the airport station KSDY, 5.3 miles away, on average over 390 readings; typical difference 3.7 °F
The reports received are counted from the network's own archive of this station's reports. Its 247 rank is counted from Storm Station's own record, which holds less than 7 days of it so far: 161 of 168 scheduled reports received, 95.8%.
Against its reference: each temperature this station reports is compared with the nearest airport or climate reference station that reported within half an hour, up to 15 miles away. The figure is its reading less the reference's, on average, as both were reported; the typical difference is the root mean square. The difference in height is shown where both heights are known.
Its schedule is one report every hour, 24 in 24 hours. Two reports in the same hour count as one received.
The ranking these charts were drawn from, as tables
Share of scheduled reports received
Stations
100%
338
90 to 99%
405
80 to 89%
69
70 to 79%
133
60 to 69%
25
50 to 59%
43
40 to 49%
29
30 to 39%
0
20 to 29%
11
10 to 19%
0
0 to 9%
0
Day
Rank
Stations ranked
Share received
Oct 16, 2026
723
1,053
95.8%
Oct 15, 2026
742
1,056
95.2%
Oct 14, 2026
773
1,057
95.8%
Oct 13, 2026
776
1,059
95.8%
Oct 12, 2026
764
1,057
95.8%
Oct 11, 2026
715
1,054
97.0%
Oct 10, 2026
776
1,049
94.0%
Oct 9, 2026
773
1,048
94.0%
Oct 8, 2026
817
1,030
95.2%
Oct 7, 2026
780
1,027
94.0%
Oct 6, 2026
738
1,025
94.0%
Oct 5, 2026
750
979
93.7%
Oct 4, 2026
746
898
92.6%
Oct 3, 2026
704
889
97.3%
Oct 2, 2026
706
889
97.3%
Oct 1, 2026
570
802
96.5%
Sep 30, 2026
581
799
95.3%
Sep 29, 2026
453
790
100.0%
Sep 28, 2026
461
768
100.0%
The readings these charts were drawn from, as a table
Hour
Temperature F
Dew point F
Relative humidity %
Wind mph
Wind direction °
Reports
Thu 15, 8 PM
42.6
32.0
66
-
-
1
Thu 15, 7 PM
43.3
31.1
62
12
343
1
Thu 15, 6 PM
44.1
30.7
59
18
338
1
Thu 15, 5 PM
43.5
31.3
62
17
326
1
Thu 15, 4 PM
44.1
31.5
61
19
322
1
Thu 15, 3 PM
41.9
32.5
69
22
318
1
Thu 15, 2 PM
40.3
35.8
84
17
318
1
Thu 15, 1 PM
42.1
34.1
73
21
309
1
Thu 15, 12 PM
42.1
33.4
71
21
309
1
Thu 15, 11 AM
42.3
31.7
66
24
311
1
Thu 15, 10 AM
41.4
31.6
68
19
304
1
Thu 15, 9 AM
41.2
31.1
67
19
300
1
Thu 15, 8 AM
39.6
29.9
68
15
294
1
Thu 15, 7 AM
40.5
30.0
66
19
294
1
Thu 15, 6 AM
39.0
29.0
67
17
300
1
Thu 15, 5 AM
41.4
29.7
63
13
316
1
Thu 15, 4 AM
46.6
36.2
67
17
318
1
Thu 15, 3 AM
45.3
37.5
74
13
307
1
Thu 15, 2 AM
43.5
37.4
79
12
290
1
Thu 15, 1 AM
46.0
37.8
73
10
294
1
Thu 15, 12 AM
46.2
38.0
73
12
294
1
Wed 14, 11 PM
45.9
39.7
79
8
270
1
Wed 14, 10 PM
46.4
38.6
74
6
262
1
The readings these charts were drawn from, as a table
Hour
Temperature F
Dew point F
Relative humidity %
Wind mph
Wind direction °
Reports
Thu 15, 8 PM
42.6
32.0
66
-
-
1
Thu 15, 7 PM
43.3
31.1
62
12
343
1
Thu 15, 6 PM
44.1
30.7
59
18
338
1
Thu 15, 5 PM
43.5
31.3
62
17
326
1
Thu 15, 4 PM
44.1
31.5
61
19
322
1
Thu 15, 3 PM
41.9
32.5
69
22
318
1
Thu 15, 2 PM
40.3
35.8
84
17
318
1
Thu 15, 1 PM
42.1
34.1
73
21
309
1
Thu 15, 12 PM
42.1
33.4
71
21
309
1
Thu 15, 11 AM
42.3
31.7
66
24
311
1
Thu 15, 10 AM
41.4
31.6
68
19
304
1
Thu 15, 9 AM
41.2
31.1
67
19
300
1
Thu 15, 8 AM
39.6
29.9
68
15
294
1
Thu 15, 7 AM
40.5
30.0
66
19
294
1
Thu 15, 6 AM
39.0
29.0
67
17
300
1
Thu 15, 5 AM
41.4
29.7
63
13
316
1
Thu 15, 4 AM
46.6
36.2
67
17
318
1
Thu 15, 3 AM
45.3
37.5
74
13
307
1
Thu 15, 2 AM
43.5
37.4
79
12
290
1
Thu 15, 1 AM
46.0
37.8
73
10
294
1
Thu 15, 12 AM
46.2
38.0
73
12
294
1
Wed 14, 11 PM
45.9
39.7
79
8
270
1
Wed 14, 10 PM
46.4
38.6
74
6
262
1
Wed 14, 9 PM
46.0
38.9
76
4
231
1
Wed 14, 8 PM
45.5
39.0
78
5
220
1
Wed 14, 7 PM
45.9
38.4
75
6
216
1
Wed 14, 6 PM
52.7
38.3
58
6
205
1
Wed 14, 5 PM
57.7
38.7
49
7
176
1
Wed 14, 4 PM
58.5
40.4
51
10
184
1
Wed 14, 3 PM
57.6
37.0
46
9
173
1
Wed 14, 2 PM
57.0
39.0
51
9
179
1
Wed 14, 1 PM
55.0
40.5
58
8
176
1
Wed 14, 12 PM
51.3
41.1
68
6
171
1
Wed 14, 11 AM
47.1
39.9
76
6
169
1
Wed 14, 10 AM
44.2
38.4
80
5
160
1
Wed 14, 9 AM
37.6
34.9
90
3
170
1
Wed 14, 8 AM
36.0
33.1
89
2
161
1
Wed 14, 7 AM
33.4
32.4
96
3
256
1
Wed 14, 6 AM
32.5
30.9
94
5
198
1
Wed 14, 5 AM
33.4
31.8
94
3
220
1
Wed 14, 4 AM
34.0
32.2
93
4
245
1
Wed 14, 3 AM
34.7
32.9
93
4
263
1
Wed 14, 2 AM
35.6
33.8
93
5
268
1
Wed 14, 1 AM
36.1
34.0
92
5
264
1
Wed 14, 12 AM
38.8
35.5
88
5
258
1
Tue 13, 11 PM
39.0
35.4
87
5
280
1
Tue 13, 10 PM
37.4
35.0
91
6
274
1
Tue 13, 9 PM
37.9
35.5
91
5
257
1
Tue 13, 8 PM
39.0
36.0
89
3
252
1
Tue 13, 7 PM
42.3
36.2
79
3
297
1
Tue 13, 6 PM
47.8
37.7
68
3
335
1
Tue 13, 5 PM
50.7
36.9
59
4
303
1
Tue 13, 4 PM
50.4
37.0
60
6
299
1
Tue 13, 3 PM
48.4
36.4
63
5
281
1
Tue 13, 2 PM
45.5
36.3
70
5
293
1
Tue 13, 1 PM
42.6
35.6
76
6
274
1
Tue 13, 12 PM
41.9
34.9
76
7
268
1
Tue 13, 11 AM
39.7
33.1
77
6
280
1
Tue 13, 10 AM
39.0
34.6
84
6
265
1
Tue 13, 9 AM
38.3
34.2
85
6
286
1
Tue 13, 8 AM
37.6
33.2
84
6
272
1
Tue 13, 7 AM
37.6
33.8
86
5
276
1
Tue 13, 6 AM
37.6
33.5
85
4
285
1
Tue 13, 5 AM
37.4
33.6
86
6
289
1
Tue 13, 4 AM
37.2
34.0
88
6
295
1
Tue 13, 3 AM
37.4
33.3
85
6
292
1
Tue 13, 2 AM
37.6
34.4
88
8
271
1
Tue 13, 1 AM
37.2
34.8
91
5
285
1
Tue 13, 12 AM
36.9
34.5
91
4
284
1
Mon 12, 11 PM
36.9
34.8
92
6
298
1
Mon 12, 10 PM
37.2
35.4
93
5
312
1
Mon 12, 9 PM
38.3
35.6
90
5
310
1
Mon 12, 8 PM
38.1
35.7
91
5
289
1
Mon 12, 7 PM
38.5
36.1
91
6
314
1
Mon 12, 6 PM
39.2
35.1
85
6
326
1
Mon 12, 5 PM
40.1
36.2
86
9
313
1
Mon 12, 4 PM
40.6
35.8
83
8
314
1
Mon 12, 3 PM
40.5
36.6
86
8
305
1
Mon 12, 2 PM
41.2
38.5
90
8
334
1
Mon 12, 1 PM
40.3
37.9
91
8
348
1
Mon 12, 12 PM
39.6
38.0
94
7
351
1
Mon 12, 11 AM
38.5
37.7
97
6
6
1
Mon 12, 10 AM
38.3
37.2
96
7
15
1
Mon 12, 9 AM
37.4
36.6
97
6
21
1
Mon 12, 8 AM
37.2
36.4
97
7
32
1
Mon 12, 7 AM
37.0
36.2
97
8
33
1
Mon 12, 6 AM
37.4
36.9
98
8
29
1
Mon 12, 5 AM
37.6
37.1
98
8
22
1
Mon 12, 4 AM
37.9
37.1
97
9
35
1
Mon 12, 3 AM
38.1
37.6
98
11
51
1
Mon 12, 2 AM
38.3
37.8
98
10
51
1
Mon 12, 1 AM
38.7
37.6
96
12
61
1
Mon 12, 12 AM
39.4
38.9
98
11
54
1
Sun 11, 11 PM
39.2
38.4
97
11
51
1
Sun 11, 10 PM
39.2
38.4
97
10
45
1
Sun 11, 9 PM
39.4
38.6
97
14
40
1
Sun 11, 8 PM
39.4
38.3
96
12
41
1
Sun 11, 7 PM
39.6
38.5
96
13
44
1
Sun 11, 6 PM
40.3
38.7
94
12
44
1
Sun 11, 5 PM
40.6
38.7
93
13
43
1
Sun 11, 4 PM
41.0
39.4
94
13
41
1
Sun 11, 3 PM
41.7
40.1
94
12
43
1
Sun 11, 2 PM
42.1
40.2
93
11
44
1
Sun 11, 1 PM
42.4
40.5
93
10
51
1
Sun 11, 12 PM
42.6
41.3
95
12
53
1
Sun 11, 11 AM
41.5
40.7
97
14
38
1
Sun 11, 10 AM
41.2
40.4
97
11
29
1
Sun 11, 9 AM
40.8
39.5
95
10
24
1
Sun 11, 8 AM
41.0
39.9
96
11
18
1
Sun 11, 7 AM
40.6
39.3
95
12
9
1
Sun 11, 6 AM
41.2
39.6
94
11
6
1
Sun 11, 5 AM
41.5
39.6
93
10
3
1
Sun 11, 4 AM
42.4
40.2
92
10
5
1
Sun 11, 3 AM
43.5
41.0
91
10
10
1
Sun 11, 2 AM
44.6
42.7
93
12
2
1
Sun 11, 1 AM
45.5
43.9
94
15
3
1
Sun 11, 12 AM
46.2
44.0
92
12
359
1
Sat 10, 11 PM
47.3
43.6
87
9
335
1
Sat 10, 10 PM
48.0
43.1
83
10
346
1
Sat 10, 9 PM
47.5
43.5
86
8
337
1
Sat 10, 8 PM
47.7
43.4
85
8
354
1
Sat 10, 7 PM
50.4
42.1
73
13
359
1
Sat 10, 6 PM
51.1
41.7
70
14
359
1
Sat 10, 5 PM
52.7
40.9
64
14
345
1
Sat 10, 4 PM
54.7
39.8
57
14
339
1
Sat 10, 3 PM
58.3
41.2
53
13
346
1
Sat 10, 2 PM
62.6
39.8
43
13
347
1
Sat 10, 1 PM
64.9
40.0
40
14
339
1
Sat 10, 12 PM
64.0
39.8
41
14
319
1
Sat 10, 11 AM
61.2
37.9
42
13
335
1
Sat 10, 10 AM
58.6
36.8
44
13
333
1
Sat 10, 9 AM
57.6
35.3
43
12
321
1
Sat 10, 8 AM
54.0
35.3
49
8
308
1
Sat 10, 7 AM
55.4
34.4
45
6
310
1
Sat 10, 6 AM
55.2
33.7
44
7
316
1
Sat 10, 5 AM
58.3
34.1
40
9
328
1
Sat 10, 4 AM
57.9
34.3
41
11
346
1
Sat 10, 3 AM
57.9
33.1
39
4
304
1
Sat 10, 2 AM
59.5
31.8
35
3
277
1
Sat 10, 1 AM
57.2
31.8
38
6
263
1
Sat 10, 12 AM
58.8
33.2
38
5
231
1
Fri 9, 11 PM
58.8
33.9
39
6
194
1
Fri 9, 10 PM
58.5
34.3
40
5
181
1
Fri 9, 9 PM
61.7
35.2
37
5
175
1
Fri 9, 8 PM
60.4
34.0
37
4
189
1
Fri 9, 7 PM
63.7
35.5
35
5
223
1
Fri 9, 6 PM
72.3
36.4
27
5
188
1
Fri 9, 5 PM
78.8
36.7
22
8
183
1
Fri 9, 4 PM
79.7
35.1
20
10
182
1
Fri 9, 3 PM
77.0
35.2
22
11
188
1
Fri 9, 2 PM
74.8
34.5
23
12
189
1
Fri 9, 1 PM
72.3
34.5
25
13
188
1
Fri 9, 12 PM
67.3
34.8
30
11
188
1
Fri 9, 11 AM
60.8
38.2
43
8
188
1
Fri 9, 10 AM
55.8
37.9
51
8
189
1
Fri 9, 9 AM
49.1
39.0
68
7
199
1
Fri 9, 8 AM
44.6
38.2
78
5
189
1
Fri 9, 7 AM
41.2
36.7
84
6
194
1
Fri 9, 6 AM
41.5
36.1
81
6
187
1
Fri 9, 5 AM
39.9
33.9
79
4
213
1
Fri 9, 4 AM
40.6
33.9
77
2
240
1
Fri 9, 3 AM
44.1
35.3
71
1
62
1
Fri 9, 2 AM
42.6
35.2
75
4
22
1
Fri 9, 1 AM
44.2
35.0
70
4
15
1
Fri 9, 12 AM
46.2
35.8
67
3
16
1
Thu 8, 11 PM
47.1
36.7
67
4
26
1
Thu 8, 10 PM
50.4
37.5
61
6
18
1
The readings these charts were drawn from, as a table
Day
High F
Low F
Highest dew point F
Lowest dew point F
Highest humidity %
Lowest humidity %
Strongest gust mph
Oct 15
46.6
39.0
38.0
29.0
84
59
37
Oct 14
58.5
32.5
41.1
30.9
96
46
16
Oct 13
50.7
36.9
37.7
33.1
91
59
14
Oct 12
41.2
36.9
38.9
34.8
98
83
19
Oct 11
46.2
39.2
44.0
38.3
97
91
22
Oct 10
64.9
47.3
43.6
31.8
87
35
23
Oct 9
79.7
39.9
39.0
33.9
84
20
22
Oct 8
73.9
44.8
37.6
28.7
67
25
18
Oct 7
69.8
43.5
34.4
24.2
66
18
17
Oct 6
71.8
52.7
41.3
31.3
48
27
19
Oct 5
81.3
46.6
43.9
32.0
62
17
28
Oct 4
72.0
37.4
34.2
27.8
70
21
15
Oct 3
66.0
42.8
45.3
25.4
72
22
25
Oct 2
72.5
43.2
43.4
24.9
65
31
23
Oct 1
62.1
36.3
32.0
20.0
74
20
14
Sep 30
63.7
41.5
43.7
31.1
68
39
20
Sep 29
74.1
43.7
46.5
27.9
85
18
28
Sep 28
71.2
50.4
55.8
43.1
86
54
22
Sep 27
61.5
44.8
40.5
27.3
72
36
20
Sep 26
70.7
49.8
56.5
32.1
97
24
29
Sep 25
79.2
52.2
54.8
46.3
82
34
27
Sep 24
82.8
45.9
58.3
38.9
100
21
11
Sep 23
66.2
51.3
59.7
50.5
99
77
17
Sep 22
73.2
47.1
53.9
46.0
96
50
24
Sep 21
68.7
51.4
51.4
47.0
94
47
22
Sep 20
59.7
53.1
55.0
50.4
98
74
20
Sep 19
63.1
57.0
59.9
54.9
99
80
19
Sep 18
79.3
59.7
60.5
54.9
93
50
19
Sep 17
76.3
40.3
54.7
39.2
99
47
23
Station report
Sidney, in 4 sheets
Drawn from its report of Oct 15, 2026, 8:00 PM local time, in the manner of the Field Book, and opened beside the plates that explain each part of it.
42.6 F with a dew point of 32.0 F, 66 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,400 ft up.
At 2,274 ft above sea level, 8 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 27.54 inHg and the temperature at 50.9 F; it reports 42.6 F, 8.3 F colder than standard.
On Oct 16 the noon sun stands 33 degrees above the horizon at 47.77 N, and the day is 10 h 39 min long. Level ground there takes 55 per cent of the noon sunlight a surface facing the sun would.
FB-WAT-002, Fig. CHumidity variables
FB-ENG-011, Fig. AWater vapour as a gas
FB-ENG-005, Fig. ALapse rates and stability
