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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

-3°C

27°F

Humidity 54%
Wind Speed E 11 km/h
Barometer 29.93 in
Dewpoint -11°C (12°F)
Visibility 16 km
Wind Chill-7°C (19°F)
Last update 6 Dec 12:45 pm CST
Extended Forecast for

Janesville WI

Winter Weather Advisory December 6, 08:00pm until December 7, 06:00am
Click here for hazard details and duration
Winter Weather Advisory

  • This Afternoon

    This Afternoon: Cloudy, with a high near -2. East wind 5 to 10 km/h.

    High: -2 °C

    Cloudy

  • Tonight

    Tonight: Snow, mainly after 10pm. The snow could be heavy at times. Low around -9. North wind 5 to 10 km/h increasing to 10 to 15 km/h after midnight. Chance of precipitation is 100%. New snow accumulation of 7 to 10 centimeters possible.

    Low: -9 °C

    Heavy Snow

  • Sunday

    Sunday: A 20 percent chance of snow before 8am. Mostly sunny, with a high near -7. North wind 10 to 15 km/h.

    High: -7 °C

    Slight Chance
    Snow then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -18. North wind 5 to 10 km/h becoming east after midnight.

    Low: -18 °C

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near -6. Light and variable wind becoming south 10 to 15 km/h in the morning.

    High: -6 °C

    Partly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of snow. Mostly cloudy, with a low around -11. South wind 15 to 25 km/h.

    Low: -11 °C

    Chance Snow

  • Tuesday

    Tuesday: A chance of rain and snow after noon. Mostly cloudy, with a high near 1. Southwest wind 15 to 20 km/h. Chance of precipitation is 30%.

    High: 1 °C

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain and snow. Low around -4. South wind 15 to 25 km/h becoming west after midnight. Chance of precipitation is 90%. New precipitation amounts between 2.5 and 5 mm possible.

    Low: -4 °C

    Rain/Snow

  • Wednesday

    Wednesday: A 50 percent chance of snow. Mostly cloudy, with a high near -1.

    High: -1 °C

    Chance Snow

Detailed Forecast

This Afternoon
Cloudy, with a high near -2. East wind 5 to 10 km/h.
Tonight
Snow, mainly after 10pm. The snow could be heavy at times. Low around -9. North wind 5 to 10 km/h increasing to 10 to 15 km/h after midnight. Chance of precipitation is 100%. New snow accumulation of 7 to 10 centimeters possible.
Sunday
A 20 percent chance of snow before 8am. Mostly sunny, with a high near -7. North wind 10 to 15 km/h.
Sunday Night
Mostly cloudy, with a low around -18. North wind 5 to 10 km/h becoming east after midnight.
Monday
Partly sunny, with a high near -6. Light and variable wind becoming south 10 to 15 km/h in the morning.
Monday Night
A 40 percent chance of snow. Mostly cloudy, with a low around -11. South wind 15 to 25 km/h.
Tuesday
A chance of rain and snow after noon. Mostly cloudy, with a high near 1. Southwest wind 15 to 20 km/h. Chance of precipitation is 30%.
Tuesday Night
Rain and snow. Low around -4. South wind 15 to 25 km/h becoming west after midnight. Chance of precipitation is 90%. New precipitation amounts between 2.5 and 5 mm possible.
Wednesday
A 50 percent chance of snow. Mostly cloudy, with a high near -1.
Wednesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around -13.
Thursday
A 30 percent chance of snow. Mostly cloudy, with a high near -7.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around -14.
Friday
Partly sunny, with a high near -9.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Janesville WI
 42.69°N 89.01°W (Elev. 863 m)
Last Update:
1:11 pm CST Dec 6, 2025
Forecast Valid:
1pm CST Dec 6, 2025-6pm CST Dec 12, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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