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Above Average Temperatures in the West; Winter Weather Returns to the Upper Midwest and Great Lakes

Well above average temperatures will continue across the West this week, potentially breaking some daily high temperature records. A storm system dropping south out of Canada will bring a wintry mix to the Upper Midwest and Great Lakes Tuesday, pushing into the Central Appalachians and interior Northeast on Wednesday. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

32°F

0°C

Humidity 87%
Wind Speed S 6 mph
Barometer 30.00 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 12 Jan 8:45 pm CST
Extended Forecast for

5 Miles SSW Janesville WI

  • Tonight

    Tonight: Increasing clouds, with a low around 33. Southwest wind 10 to 15 mph.

    Low: 33 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 47. West wind around 15 mph, with gusts as high as 25 mph.

    High: 47 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 21. West wind 10 to 15 mph.

    Low: 21 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of snow before noon. Partly sunny, with a high near 28. Blustery, with a north wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 28 °F

    Blustery.
    Slight Chance
    Snow then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 11. North wind 10 to 15 mph.

    Low: 11 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 25. Northwest wind around 10 mph becoming southwest in the afternoon.

    High: 25 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Snow likely, mainly after midnight. Mostly cloudy, with a low around 19. South wind around 10 mph. Chance of precipitation is 60%.

    Low: 19 °F

    Snow Likely

  • Friday

    Friday: Snow likely. Cloudy, with a high near 31. Southwest wind 10 to 15 mph becoming west in the afternoon. Chance of precipitation is 70%.

    High: 31 °F

    Snow Likely

  • Friday Night

    Friday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 12.

    Low: 12 °F

    Chance Snow

Detailed Forecast

Tonight
Increasing clouds, with a low around 33. Southwest wind 10 to 15 mph.
Tuesday
Partly sunny, with a high near 47. West wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly cloudy, with a low around 21. West wind 10 to 15 mph.
Wednesday
A 20 percent chance of snow before noon. Partly sunny, with a high near 28. Blustery, with a north wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 11. North wind 10 to 15 mph.
Thursday
Mostly sunny, with a high near 25. Northwest wind around 10 mph becoming southwest in the afternoon.
Thursday Night
Snow likely, mainly after midnight. Mostly cloudy, with a low around 19. South wind around 10 mph. Chance of precipitation is 60%.
Friday
Snow likely. Cloudy, with a high near 31. Southwest wind 10 to 15 mph becoming west in the afternoon. Chance of precipitation is 70%.
Friday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 12.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 16.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 2.
Sunday
Partly sunny, with a high near 15.
Sunday Night
Mostly cloudy, with a low around 3.
M.L.King Day
Partly sunny, with a high near 17.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Janesville WI
 42.63°N 89.04°W (Elev. 804 ft)
Last Update:
8:11 pm CST Jan 12, 2026
Forecast Valid:
8pm CST Jan 12, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation