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.

Mostly Cloudy and Breezy

46°F

8°C

Humidity 71%
Wind Speed NE 21 G 30 mph
Barometer 29.73 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 22 Mar 8:45 am CDT
Extended Forecast for

5 Miles SSW Janesville WI

  • Today

    Today: A chance of sprinkles with a slight chance of rain before 2pm, then a chance of sprinkles between 2pm and 4pm. Mostly cloudy, with a high near 46. Breezy, with a north wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 46 °F

    Breezy then
    Slight Chance
    Rain and
    Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 26. North wind 5 to 15 mph.

    Low: 26 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 47. North wind around 5 mph.

    High: 47 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30. East wind around 5 mph becoming south after midnight.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 55. Southwest wind 5 to 10 mph.

    High: 55 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39. Southeast wind around 5 mph.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of rain before 1pm. Mostly cloudy, with a high near 56. Southeast wind around 10 mph.

    High: 56 °F

    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 1am. Mostly cloudy, with a low around 43. Southeast wind 5 to 10 mph.

    Low: 43 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: A 20 percent chance of rain. Partly sunny, with a high near 63.

    High: 63 °F

    Slight Chance
    Rain

Detailed Forecast

Today
A chance of sprinkles with a slight chance of rain before 2pm, then a chance of sprinkles between 2pm and 4pm. Mostly cloudy, with a high near 46. Breezy, with a north wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 26. North wind 5 to 15 mph.
Monday
Sunny, with a high near 47. North wind around 5 mph.
Monday Night
Mostly cloudy, with a low around 30. East wind around 5 mph becoming south after midnight.
Tuesday
Mostly cloudy, with a high near 55. Southwest wind 5 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 39. Southeast wind around 5 mph.
Wednesday
A 20 percent chance of rain before 1pm. Mostly cloudy, with a high near 56. Southeast wind around 10 mph.
Wednesday Night
A 20 percent chance of rain before 1am. Mostly cloudy, with a low around 43. Southeast wind 5 to 10 mph.
Thursday
A 20 percent chance of rain. Partly sunny, with a high near 63.
Thursday Night
Mostly cloudy, with a low around 28.
Friday
Partly sunny, with a high near 43.
Friday Night
Mostly clear, with a low around 26.
Saturday
Sunny, with a high near 51.
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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:
8:32 am CDT Mar 22, 2026
Forecast Valid:
9am CDT Mar 22, 2026-6pm CDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation