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

54°F

12°C

Humidity 67%
Wind Speed W 12 mph
Barometer 29.76 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 20 Mar 8:45 am CDT
Extended Forecast for

5 Miles SSW Janesville WI

  • Today

    Today: Mostly cloudy, with a high near 62. Southwest wind 10 to 15 mph becoming north in the afternoon.

    High: 62 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 39. North wind around 5 mph becoming calm.

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 67. Southeast wind 5 to 15 mph becoming southwest in the afternoon.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 48. Southwest wind 5 to 10 mph becoming north after midnight.

    Low: 48 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A 20 percent chance of rain before 1pm. Mostly cloudy, with a high near 49. North wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 49 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 29. North wind 10 to 15 mph.

    Low: 29 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 47. North wind 5 to 10 mph.

    High: 47 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 32. East wind around 5 mph becoming south after midnight.

    Low: 32 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 53.

    High: 53 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly cloudy, with a high near 62. Southwest wind 10 to 15 mph becoming north in the afternoon.
Tonight
Mostly cloudy, with a low around 39. North wind around 5 mph becoming calm.
Saturday
Mostly sunny, with a high near 67. Southeast wind 5 to 15 mph becoming southwest in the afternoon.
Saturday Night
Increasing clouds, with a low around 48. Southwest wind 5 to 10 mph becoming north after midnight.
Sunday
A 20 percent chance of rain before 1pm. Mostly cloudy, with a high near 49. North wind 10 to 15 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 29. North wind 10 to 15 mph.
Monday
Mostly sunny, with a high near 47. North wind 5 to 10 mph.
Monday Night
Increasing clouds, with a low around 32. East wind around 5 mph becoming south after midnight.
Tuesday
Mostly cloudy, with a high near 53.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
Partly sunny, with a high near 51.
Wednesday Night
Mostly cloudy, with a low around 40.
Thursday
A 20 percent chance of rain. Mostly sunny, with a high near 58.
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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:
8:37 am CDT Mar 20, 2026
Forecast Valid:
8am CDT Mar 20, 2026-6pm CDT Mar 26, 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