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.

Fog/Mist

73°F

23°C

Humidity 94%
Wind Speed W 3 mph
Barometer 29.94 in
Dewpoint 72°F (22°C)
Visibility 3.00 mi
Last update 16 Aug 4:55 am CDT
Extended Forecast for

4 Miles WSW Fort Atkinson WI

  • Today

    Today: Patchy fog before 8am. Otherwise, partly sunny, with a high near 83. West wind 5 to 10 mph.

    High: 83 °F

    Patchy Fog
    then Partly
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 62. North wind 5 to 10 mph.

    Low: 62 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. Southwest wind around 5 mph.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. West wind 5 to 10 mph.

    High: 81 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. West wind around 5 mph becoming north after midnight. Chance of precipitation is 40%.

    Low: 61 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 75. Northeast wind around 5 mph.

    High: 75 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, partly sunny, with a high near 83. West wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 62. North wind 5 to 10 mph.
Monday
Mostly sunny, with a high near 80. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 63. Southwest wind around 5 mph.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. West wind 5 to 10 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. West wind around 5 mph becoming north after midnight. Chance of precipitation is 40%.
Wednesday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 75. Northeast wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 55. Calm wind.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 57.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 78.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Fort Atkinson WI
 42.9°N 88.93°W (Elev. 774 ft)
Last Update:
5:12 am CDT Aug 16, 2026
Forecast Valid:
5am CDT Aug 16, 2026-6pm CDT Aug 22, 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