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.

Partly Cloudy

79°F

26°C

Humidity 51%
Wind Speed NW 18 G 25 mph
Barometer 29.97 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 22 Aug 2:45 pm CDT
Extended Forecast for

3 Miles WSW Fort Atkinson WI

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 78. Northwest wind around 15 mph.

    High: 78 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 53. North wind 5 to 10 mph.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 75. Northwest wind 5 to 10 mph.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 51. North wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 77. Calm wind becoming northwest around 5 mph.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. Calm wind becoming southwest around 5 mph in the morning.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 63. South wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. Chance of precipitation is 30%.

    High: 82 °F

    Slight Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 78. Northwest wind around 15 mph.
Tonight
Mostly clear, with a low around 53. North wind 5 to 10 mph.
Sunday
Sunny, with a high near 75. Northwest wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 51. North wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 77. Calm wind becoming northwest around 5 mph.
Monday Night
Partly cloudy, with a low around 57. Calm wind.
Tuesday
Mostly sunny, with a high near 80. Calm wind becoming southwest around 5 mph in the morning.
Tuesday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 63. South wind 5 to 10 mph. Chance of precipitation is 30%.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. Chance of precipitation is 30%.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 62.
Thursday
Sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 60.
Friday
Sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Fort Atkinson WI
 42.9°N 88.9°W (Elev. 781 ft)
Last Update:
2:36 pm CDT Aug 22, 2026
Forecast Valid:
2pm CDT Aug 22, 2026-6pm CDT Aug 28, 2026
 
Forecast Discussion
 
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Additional Resources

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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