National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Partly Cloudy

28°F

-2°C

Humidity 86%
Wind Speed Calm
Barometer 30.22 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 12 Feb 7:45 pm CST
Extended Forecast for

5 Miles SSW Janesville WI

  • Tonight

    Tonight: Mostly clear, with a low around 27. Southeast wind around 5 mph becoming calm.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 50. South wind 5 to 10 mph becoming southwest in the afternoon.

    High: 50 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 28. Southwest wind around 5 mph becoming calm in the evening.

    Low: 28 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 52. Calm wind becoming south around 5 mph in the afternoon.

    High: 52 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32. South wind around 5 mph becoming calm in the evening.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 52. Calm wind becoming northwest around 5 mph in the morning.

    High: 52 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32. Calm wind becoming south around 5 mph after midnight.

    Low: 32 °F

    Partly Cloudy

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 55. Southwest wind 5 to 10 mph.

    High: 55 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 27. Southeast wind around 5 mph becoming calm.
Friday
Sunny, with a high near 50. South wind 5 to 10 mph becoming southwest in the afternoon.
Friday Night
Mostly clear, with a low around 28. Southwest wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 52. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 32. South wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 52. Calm wind becoming northwest around 5 mph in the morning.
Sunday Night
Partly cloudy, with a low around 32. Calm wind becoming south around 5 mph after midnight.
Washington's Birthday
Partly sunny, with a high near 55. Southwest wind 5 to 10 mph.
Monday Night
Mostly cloudy, with a low around 38.
Tuesday
Mostly cloudy, with a high near 55.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 44.
Wednesday
A 40 percent chance of rain. Mostly sunny, with a high near 56.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Thursday
A chance of rain and snow. Partly sunny, with a high near 42. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Janesville WI
 42.63°N 89.04°W (Elev. 804 ft)
Last Update:
7:57 pm CST Feb 12, 2026
Forecast Valid:
8pm CST Feb 12, 2026-6pm CST Feb 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation