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

52°F

11°C

Humidity 47%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 14 Feb 1:45 pm CST
Extended Forecast for

5 Miles SSW Janesville WI

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 51. Calm wind becoming south around 5 mph.

    High: 51 °F

    Partly Sunny

  • Tonight

    Tonight: 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 53. Northwest wind around 5 mph becoming calm in the afternoon.

    High: 53 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 33. Calm wind becoming south around 5 mph after midnight.

    Low: 33 °F

    Increasing
    Clouds

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 61. Southwest wind 10 to 15 mph.

    High: 61 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 37. Southwest wind around 5 mph becoming east after midnight.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 54. East wind 5 to 15 mph.

    High: 54 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of rain, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 46. Southeast wind around 15 mph becoming south after midnight. Chance of precipitation is 50%.

    Low: 46 °F

    Chance Rain

  • Wednesday

    Wednesday: A 30 percent chance of rain, mainly before noon. Sunny, with a high near 60. Breezy.

    High: 60 °F

    Chance Rain
    and Breezy

Detailed Forecast

This Afternoon
Partly sunny, with a high near 51. Calm wind becoming south around 5 mph.
Tonight
Partly cloudy, with a low around 32. South wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 53. Northwest wind around 5 mph becoming calm in the afternoon.
Sunday Night
Increasing clouds, with a low around 33. Calm wind becoming south around 5 mph after midnight.
Washington's Birthday
Mostly sunny, with a high near 61. Southwest wind 10 to 15 mph.
Monday Night
Mostly cloudy, with a low around 37. Southwest wind around 5 mph becoming east after midnight.
Tuesday
Mostly cloudy, with a high near 54. East wind 5 to 15 mph.
Tuesday Night
A chance of rain, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 46. Southeast wind around 15 mph becoming south after midnight. Chance of precipitation is 50%.
Wednesday
A 30 percent chance of rain, mainly before noon. Sunny, with a high near 60. Breezy.
Wednesday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 33.
Thursday
A 30 percent chance of rain. Mostly sunny, with a high near 48.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.
Friday
A 30 percent chance of snow. Mostly cloudy, with a high near 37.
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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:
2:18 pm CST Feb 14, 2026
Forecast Valid:
2pm CST Feb 14, 2026-6pm CST Feb 20, 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