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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

21°F

-6°C

Humidity 68%
Wind Speed Calm
Barometer 30.20 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Last update 23 Feb 11:55 pm CST
Extended Forecast for

Janesville WI

  • Overnight

    Overnight: Mostly cloudy, with a low around 17. South wind 5 to 10 mph.

    Low: 17 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Rain and snow showers likely before 5pm, then a slight chance of snow showers. Mostly cloudy, with a high near 38. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 35 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 38 °F

    Breezy.
    Mostly Cloudy
    then
    Rain/Snow
    Likely

  • Tuesday Night

    Tuesday Night: Cloudy during the early evening, then gradual clearing, with a low around 19. West wind around 15 mph.

    Low: 19 °F

    Gradual
    Clearing

  • Wednesday

    Wednesday: Sunny, with a high near 30. Northwest wind 5 to 15 mph.

    High: 30 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 17. Northwest wind around 5 mph becoming calm in the evening.

    Low: 17 °F

    Slight Chance
    Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 39. Calm wind becoming southwest around 5 mph in the morning.

    High: 39 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 26. Southwest wind around 5 mph.

    Low: 26 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 54. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 54 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 17. South wind 5 to 10 mph.
Tuesday
Rain and snow showers likely before 5pm, then a slight chance of snow showers. Mostly cloudy, with a high near 38. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 35 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Tuesday Night
Cloudy during the early evening, then gradual clearing, with a low around 19. West wind around 15 mph.
Wednesday
Sunny, with a high near 30. Northwest wind 5 to 15 mph.
Wednesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 17. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 39. Calm wind becoming southwest around 5 mph in the morning.
Thursday Night
Mostly clear, with a low around 26. Southwest wind around 5 mph.
Friday
Mostly sunny, with a high near 54. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 26.
Saturday
A 20 percent chance of snow. Partly sunny, with a high near 37.
Saturday Night
Mostly cloudy, with a low around 16.
Sunday
A 40 percent chance of snow. Partly sunny, with a high near 29.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 17.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Janesville WI
 42.67°N 89.04°W (Elev. 774 ft)
Last Update:
11:32 pm CST Feb 23, 2026
Forecast Valid:
12am CST Feb 24, 2026-6pm CST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation