Temperature
54 F at 1 PM; 59 F at its warmest, 3 PM Thursday, and 48 F at its coolest, 5 AM.
- Now
- 54F
- 1 PM
- Highest
- 59F
- 3 PM Thursday
- Lowest
- 48F
- 5 AM
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
Southern Wisconsin Regional Airport, Wisconsin
Small airport in Rock County, Wisconsin* WHAT...Sub-freezing temperatures as low as 28 degrees expected. * WHERE...Portions of east central, south central, and southeast Wisconsin. * WHEN...From 1 AM to 9 AM CDT Saturday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Take steps now to protect tender plants from the cold.
53°
54°/44°
Mostly cloudy·
Feels like 53°·Moderate breeze 18 mph N
Alert. A Freeze Warning is in force for Southern Wisconsin Regional Airport until 9 AM tomorrow. Read the alert in full, and see what it means in the Field Book.
Now. Southern Wisconsin Regional Airport is 53° and mostly cloudy at 2 PM. The dew point is 41°, so the air feels dry and comfortable. Moderate breeze from the north at 18 mph, gusting to 29 mph.
Today and tonight. The warmest of the day has passed; it cools to about 44° by 8 PM. Tonight falls to about 30° by 7 AM, under a mostly clear sky. A freeze: protect plants and pipes. No rain is expected for the rest of the day.
The week. The warmest day ahead is Thursday, near 71°, and the coolest tomorrow, near 56°. The days ahead look dry. The first freeze could come tomorrow, a low of 30°.
The sky tonight. The sun sets at 6:13 PM. The Moon is a waxing crescent, 33% lit, and sets at 10:01 PM. The next full Moon is Sunday, Oct 25. After dark, look for Saturn, bright in the east-southeast. A planet shines with a steady light where the stars around it twinkle. The Orionids meteor shower is active, peaking around Oct 21: at its peak, up to about 20 meteors an hour can be seen from a dark site. The sky is forecast to stay clear: a good night to look up. The day is 11 hours 4 minutes long, 3 minutes shorter than yesterday.
3UV Moderate
19Air quality
64%Humidity
64%Cloud
Now
2:00 PM
53feels53
18mph
Today
Oct 16
5444
13%
20mph
Sat
Oct 17
5630
12mph
Sun
Oct 18
6237
15mph
Mon
Oct 19
6638
clear day
Tue
Oct 20
6840
overcast
Wed
Oct 21
7043
overcast
Thu
Oct 22
7146
overcast
53°
54°44°
56°30°
62°37°
66°38°
68°40°
70°43°
71°46°
As of 2:00 PM in Southern Wisconsin Regional Airport, Wisconsin.
Air quality
The air at Southern Wisconsin Regional Airport
Index 19, good, led by ozone. Read at 2 PM from its reporting area, Rockford (IL), 20 miles off.
19Good
- Fine particles (PM2.5)15Good-
- Ozone19Good21 ppb19.7 mi
The days ahead
Good each day through Mon Oct 19, led by fine particles. Yesterday measured 18, good.
GoodModerate
- 18YesterdayOct 15
- GoodTodayOct 16
- GoodSatOct 17
- GoodSunOct 18
- GoodMonOct 19
Smoke, the next 42 hours
No smoke near the ground through Sun 7 AM.
Precipitation
What has fallen at Southern Wisconsin Regional Airport
0.30 in in the last 24 hours, 0.94 in over the last 3 days, to Fri 1 PM. Measured by radar and rain gauges, as water.
- Last 24 hours
- 0.30in
- Last 3 days
- 0.94in
3 days agoLast 24 hours 32%
Visibility
How far you can see at Southern Wisconsin Regional Airport, the next 42 hours
Visibility stays 8 miles or more through Sun 7 AM, lowest 9 miles Sat 6 AM.
F
Now, today, and the week
Weather instrument stations by state
Airfield
- Code
- JVL
- ICAO
- KJVL
- IATA
- JVL
- Field elevation
- 808 ft
- Serves
- Janesville
- Kind
- Small airport
- Scheduled service
- No
- Its own instrument
- JVL
- Wind now
- From 340° at 17 mph, read 16 Oct, 13:45
Runways
| Runway | Length | Width | Surface | Heading, true | Wind along it now | Crosswind now |
|---|---|---|---|---|---|---|
| 04 / 22 | 6,701 ft | 150 ft | Asphalt | 41° / 221° | 8 mph head, on 04 | 15 mph from the left |
| 14 / 32 | 7,302 ft | 150 ft | Concrete | 134° / 314° | 15 mph head, on 32 | 7 mph from the right |
| 18 / 36 | 5,004 ft | 75 ft | Asphalt | 179° / 359° | 16 mph head, on 36 | 6 mph from the left |
Measured here
What the airfield's own instrument measured, the last 24 hours
Every hour from Janesville/Rock (JVL), Southern Wisconsin Regional Airport's own instrument, measure by measure, on the field's own clock.
Humidity and dew point
A dew point of 43 F, the air 67% saturated; the humidity ran from 67% at 1 PM to 100% at 5 PM Thursday.
- Dew point now
- 43F
- 1 PM
- Humidity now
- 67%
- Humidity, range
- 67 to 100%
How it is measured: Humidity variables, Field Book FB-WAT-002
Wind
17 mph from the north northwest at 1 PM; at its strongest 18 mph, 10 PM Thursday, with a gust of 28 mph at 10 PM Thursday.
- Now
- 17mph
- from the north northwest
- Strongest
- 18mph
- 10 PM Thursday
- Highest gust
- 28mph
- 10 PM Thursday
How it is measured: Coriolis as geometry, Field Book FB-ENG-008
Pressure
30.16 inHg at 1 PM, rising 0.08 inHg over 3 hours; 0.35 inHg higher than a day before.
- Now
- 30.16inHg
- 1 PM
- 3 hours
- +0.08inHg
- rising
- 24 hours
- +0.35inHg
How it is measured: Hydrostatic balance, Field Book FB-ENG-003
Visibility
Down to 2 miles at 3 PM Thursday; 10 miles or more now.
- Now
- 10+mi
- Lowest
- 2mi
- 3 PM Thursday
- Hours under a mile
- 0
How it is measured: Fog types, Field Book FB-WAT-020
Cloud base
The lowest cloud base came down to 400 ft at 4 PM Thursday; a base was reported in 23 of the hours.
- Lowest base now
- -
- Lowest in 24 hours
- 400ft
- 4 PM Thursday
- Hours with a base reported
- 23
How it is measured: Cloud classification, Field Book FB-SKY-001
Precipitation
None measured in the gauge in the last 24 hours.
- Last 24 hours
- 0.00in
- Wettest hour
- -
- Hours with some
- 0
How it is measured: ASOS, Field Book FB-INS-002
Janesville/Rock: every reading, the last 7 days, 30 days and the year, and how well it reports
What is measuring near here
The 5 instruments nearest Southern Wisconsin Regional Airport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.0 miles away.
measured now3 instruments
At an airfield/0.0 mi away/807 ft/1 ft below here
temp, wind, gust, visibility, precip, pressure
JanesvilleJANW3
At a river or reservoir gauge/6.3 mi away/876 ft/68 ft above here
temp, wind, gust, humidity, pressure
I-39 / 90 at STH 26WI089
Beside a road/7.8 mi away/915 ft/107 ft above here
temp, pavement temp, wind, visibility, precip
measured daily2 instruments
Janesville 2.9 SWI-RK-29
In a volunteer observer's own ground/1.8 mi away/831 ft/23 ft above here
precip, snowfall, snow depth
BeloitBLTW3
At a cooperative observer's station/8.3 mi away/758 ft/50 ft below here
snowfall, snow depth, precip, high, low
What the snow tracker reads here
Every instrument in this state
-
Snow on the ground
Elsewhere in Wisconsin
19 places, each with its own forecast and its own instruments.
Near Southern Wisconsin Regional Airport
The nearest places, each with its own forecast and the instruments nearest it.
- Janesvillecity, 5 mi
- Hanovercommunity, 6 mi
- Shopierecommunity, 6 mi
- Beloitcity, 7 mi
- Footvillevillage, 9 mi
- Clintonvillage, 10 mi
- Orfordvillevillage, 11 mi
- Miltoncity, 12 mi
- Fultoncommunity, 14 mi
- Allens Grovecommunity, 14 mi
- Edgertoncity, 15 mi
- Brodheadcity, 17 mi
Airports near Southern Wisconsin Regional Airport
- Monroe Municipal AirportEFT, 28 mi
- East Troy Municipal Airport57C, 36 mi
- Burlington Municipal AirportBUU, 38 mi
- Dane County Regional Truax FieldMSN, 39 mi
- Watertown Municipal AirportRYV, 41 mi
- Middleton Municipal Morey FieldC29, 42 mi
- Waukesha County AirportUES, 50 mi
- Kenosha Regional AirportENW, 57 mi