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.

Overcast

34°F

1°C

Humidity 70%
Wind Speed N 15 G 24 mph
Barometer 30.19 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 23 Mar 12:55 am CDT
Extended Forecast for

5 Miles SSW Janesville WI

  • Overnight

    Overnight: Partly cloudy, with a low around 26. North wind 5 to 10 mph.

    Low: 26 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 45. North wind 5 to 10 mph.

    High: 45 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 30. Calm wind becoming south around 5 mph in the evening.

    Low: 30 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 53. South wind around 10 mph.

    High: 53 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37. South wind around 5 mph.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 62. South wind 5 to 10 mph.

    High: 62 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 47. South wind 5 to 10 mph.

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 69. South wind 5 to 15 mph becoming north in the afternoon.

    High: 69 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 1am. Mostly cloudy, with a low around 28.

    Low: 28 °F

    Slight Chance
    Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 26. North wind 5 to 10 mph.
Monday
Sunny, with a high near 45. North wind 5 to 10 mph.
Monday Night
Increasing clouds, with a low around 30. Calm wind becoming south around 5 mph in the evening.
Tuesday
Partly sunny, with a high near 53. South wind around 10 mph.
Tuesday Night
Mostly cloudy, with a low around 37. South wind around 5 mph.
Wednesday
Mostly cloudy, with a high near 62. South wind 5 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 47. South wind 5 to 10 mph.
Thursday
A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 69. South wind 5 to 15 mph becoming north in the afternoon.
Thursday Night
A 20 percent chance of rain before 1am. Mostly cloudy, with a low around 28.
Friday
Mostly sunny, with a high near 44.
Friday Night
Mostly clear, with a low around 25.
Saturday
Sunny, with a high near 50.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Partly sunny, with a high near 57.
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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:
12:31 am CDT Mar 23, 2026
Forecast Valid:
1am CDT Mar 23, 2026-6pm CDT Mar 29, 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