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.

Fair

55°F

13°C

Humidity 94%
Wind Speed Calm
Barometer 30.11 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 25 Aug 4:35 am CDT
Extended Forecast for

5 Miles SW Fort Atkinson WI

  • Today

    Today: Mostly sunny, with a high near 79. Southwest wind 5 to 10 mph.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly between 2am and 5am. Partly cloudy, with a low around 63. South wind 5 to 15 mph.

    Low: 63 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers between 7am and 1pm. Mostly sunny, with a high near 81. Southwest wind around 10 mph becoming west in the afternoon. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 61. Northwest wind 5 to 10 mph.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 79. North wind around 5 mph.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 79. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58. Southeast wind around 5 mph.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 79. Southwest wind 5 to 10 mph.
Tonight
A 50 percent chance of showers and thunderstorms, mainly between 2am and 5am. Partly cloudy, with a low around 63. South wind 5 to 15 mph.
Wednesday
A slight chance of showers between 7am and 1pm. Mostly sunny, with a high near 81. Southwest wind around 10 mph becoming west in the afternoon. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 61. Northwest wind 5 to 10 mph.
Thursday
Sunny, with a high near 79. North wind around 5 mph.
Thursday Night
Mostly clear, with a low around 57. Calm wind.
Friday
Sunny, with a high near 79. Calm wind becoming southeast around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 58. Southeast wind around 5 mph.
Saturday
Partly sunny, with a high near 79.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Monday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Fort Atkinson WI
 42.88°N 88.9°W (Elev. 814 ft)
Last Update:
4:33 am CDT Aug 25, 2026
Forecast Valid:
4am CDT Aug 25, 2026-6pm CDT Aug 31, 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