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.

Rain

34°F

1°C

Humidity 100%
Wind Speed E 12 mph
Barometer 29.94 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 2 Apr 5:10 am CDT
Extended Forecast for

5 Miles SSW Janesville WI

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Low around 35. East wind around 15 mph. Chance of precipitation is 100%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 35 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. High near 65. Breezy, with an east wind 15 to 20 mph becoming south in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    High: 65 °F

    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Some of the storms could produce heavy rainfall. Low around 39. Breezy, with a south wind 15 to 20 mph becoming west 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Heavy Rain
    and Breezy
    then Mostly
    Cloudy

  • Friday

    Friday: Partly sunny, with a high near 59. West wind 5 to 10 mph becoming east in the afternoon.

    High: 59 °F

    Partly Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 7pm, then showers and possibly a thunderstorm between 7pm and 4am, then a chance of showers after 4am. Low around 40. East wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 40 °F

    Showers

  • Saturday

    Saturday: A 30 percent chance of showers, mainly before 7am. Mostly cloudy, with a high near 56. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 56 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 33. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 33 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 51. Northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 51 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 35. East wind around 15 mph. Chance of precipitation is 100%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. High near 65. Breezy, with an east wind 15 to 20 mph becoming south in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Thursday Night
Showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Some of the storms could produce heavy rainfall. Low around 39. Breezy, with a south wind 15 to 20 mph becoming west 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Partly sunny, with a high near 59. West wind 5 to 10 mph becoming east in the afternoon.
Friday Night
A slight chance of showers and thunderstorms before 7pm, then showers and possibly a thunderstorm between 7pm and 4am, then a chance of showers after 4am. Low around 40. East wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
A 30 percent chance of showers, mainly before 7am. Mostly cloudy, with a high near 56. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Mostly cloudy, with a low around 33. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 51. Northwest wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 33.
Monday
Partly sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 27.
Tuesday
Mostly sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
Mostly cloudy, with a high near 60. Breezy.
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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:
5:22 am CDT Apr 2, 2026
Forecast Valid:
5am CDT Apr 2, 2026-6pm CDT Apr 8, 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