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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 >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

36°F

2°C

Humidity 87%
Wind Speed SW 10 mph
Barometer 29.71 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 13 Jan 4:15 am CST
Extended Forecast for

5 Miles SSW Janesville WI

  • Overnight

    Overnight: Sprinkles likely after 5am. Cloudy, with a low around 32. Southwest wind 10 to 15 mph.

    Low: 32 °F

    Sprinkles
    Likely

  • Tuesday

    Tuesday: Partly sunny, with a high near 48. West wind around 15 mph, with gusts as high as 30 mph.

    High: 48 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow between midnight and 2am, then a slight chance of snow after 2am. Cloudy, with a low around 22. Blustery, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    Low: 22 °F

    Cloudy then
    Slight Chance
    Rain/Snow and
    Blustery

  • Wednesday

    Wednesday: Partly sunny, with a high near 24. Blustery, with a north wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 24 °F

    Partly Sunny
    and Blustery

  • Wednesday Night

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

    Low: 10 °F

    Partly Cloudy

  • Thursday

    Thursday: Increasing clouds, with a high near 25. Northwest wind 5 to 15 mph becoming southwest in the afternoon.

    High: 25 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Snow. Low around 20. South wind 10 to 15 mph. Chance of precipitation is 80%.

    Low: 20 °F

    Snow

  • Friday

    Friday: Snow likely. Mostly cloudy, with a high near 33. West wind around 15 mph. Chance of precipitation is 70%.

    High: 33 °F

    Snow Likely

  • Friday Night

    Friday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 11.

    Low: 11 °F

    Chance Snow

Detailed Forecast

Overnight
Sprinkles likely after 5am. Cloudy, with a low around 32. Southwest wind 10 to 15 mph.
Tuesday
Partly sunny, with a high near 48. West wind around 15 mph, with gusts as high as 30 mph.
Tuesday Night
A slight chance of rain and snow between midnight and 2am, then a slight chance of snow after 2am. Cloudy, with a low around 22. Blustery, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 24. Blustery, with a north wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 10. North wind 10 to 15 mph.
Thursday
Increasing clouds, with a high near 25. Northwest wind 5 to 15 mph becoming southwest in the afternoon.
Thursday Night
Snow. Low around 20. South wind 10 to 15 mph. Chance of precipitation is 80%.
Friday
Snow likely. Mostly cloudy, with a high near 33. West wind around 15 mph. Chance of precipitation is 70%.
Friday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 11.
Saturday
A 30 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 4.
Sunday
Partly sunny, with a high near 14.
Sunday Night
Mostly cloudy, with a low around 2.
M.L.King Day
Partly sunny, with a high near 15.
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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:
4:23 am CST Jan 13, 2026
Forecast Valid:
4am CST Jan 13, 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