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.

Overcast

81°F

27°C

Humidity 74%
Wind Speed Calm
Barometer 29.84 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 12 Aug 1:45 pm CDT
Extended Forecast for

7 Miles WSW Fort Atkinson WI

  • This Afternoon

    This Afternoon: A slight chance of showers and thunderstorms between 3pm and 4pm. Partly sunny, with a high near 82. East wind around 5 mph becoming north. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 65. North wind around 5 mph becoming calm.

    Low: 65 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Showers likely, mainly between 11am and 4pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 77. Light east wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 77 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday Night

    Thursday Night: A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 63. East wind around 5 mph.

    Low: 63 °F

    Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers before 1pm. Partly sunny, with a high near 79. East wind 5 to 10 mph.

    High: 79 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. East wind 5 to 10 mph. Chance of precipitation is 50%.

    Low: 64 °F

    Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 81. South wind 5 to 10 mph.

    High: 81 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. South wind around 5 mph becoming west after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80.

    High: 80 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms between 3pm and 4pm. Partly sunny, with a high near 82. East wind around 5 mph becoming north. Chance of precipitation is 20%.
Tonight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 65. North wind around 5 mph becoming calm.
Thursday
Showers likely, mainly between 11am and 4pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 77. Light east wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 63. East wind around 5 mph.
Friday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 79. East wind 5 to 10 mph.
Friday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. East wind 5 to 10 mph. Chance of precipitation is 50%.
Saturday
A 40 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 81. South wind 5 to 10 mph.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. South wind around 5 mph becoming west after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80.
Sunday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 62.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles WSW Fort Atkinson WI
 42.88°N 88.96°W (Elev. 774 ft)
Last Update:
1:21 pm CDT Aug 12, 2026
Forecast Valid:
1pm CDT Aug 12, 2026-6pm CDT Aug 18, 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