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

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy and Breezy

45°F

7°C

Humidity 49%
Wind Speed W 23 G 33 mph
Barometer 29.95 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 18 Apr 4:45 pm CDT
Extended Forecast for

5 Miles SSW Janesville WI

Flood Warning until further notice
Click here for hazard details and duration
Flood Warning until further notice
  •  
    Flood Warning until further notice

    NOW until further notice

    Flood Warning

  • Tonight

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of snow showers before 9am, then a slight chance of rain showers. Mostly sunny, with a high near 48. Northwest wind 5 to 15 mph. Chance of precipitation is 20%.

    High: 48 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 27. Northwest wind 5 to 10 mph becoming light north after midnight.

    Low: 27 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 53. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 53 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 41. South wind around 10 mph.

    Low: 41 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 71. Southwest wind 10 to 15 mph.

    High: 71 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 45. West wind around 5 mph becoming northeast after midnight.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 72. Northeast wind 5 to 10 mph becoming southeast in the afternoon.

    High: 72 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 30. Southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Sunday
A slight chance of snow showers before 9am, then a slight chance of rain showers. Mostly sunny, with a high near 48. Northwest wind 5 to 15 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 27. Northwest wind 5 to 10 mph becoming light north after midnight.
Monday
Sunny, with a high near 53. Light and variable wind becoming south 5 to 10 mph in the morning.
Monday Night
Mostly cloudy, with a low around 41. South wind around 10 mph.
Tuesday
Mostly sunny, with a high near 71. Southwest wind 10 to 15 mph.
Tuesday Night
Partly cloudy, with a low around 45. West wind around 5 mph becoming northeast after midnight.
Wednesday
Sunny, with a high near 72. Northeast wind 5 to 10 mph becoming southeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 68.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 41.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 60.
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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:
4:46 pm CDT Apr 18, 2026
Forecast Valid:
5pm CDT Apr 18, 2026-6pm CDT Apr 25, 2026
 
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