Fire Weather Concerns and Severe Weather

Dry and breezy conditions will bring elevated to critical fire weather conditions across portions of the northern and central High Plains through this weekend, where fuels remain largely receptive. Severe thunderstorms and heavy rainfall are possible from the Plains into the Upper Midwest, as well as in the Ohio Valley and portions of the Mid-Atlantic through this weekend. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

70°F

21°C

Humidity 88%
Wind Speed NW 7 mph
Barometer 29.90 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 12 Sep 6:45 pm CDT
Extended Forecast for

Fort Atkinson WI

  • Tonight

    Tonight: Mostly clear, with a low around 53. Northwest wind around 5 mph.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: A 30 percent chance of showers, mainly before 3pm.  Increasing clouds, with a high near 70. North wind 5 to 10 mph.

    High: 70 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers after 1pm.  Increasing clouds, with a high near 74. Light and variable wind becoming southeast 5 to 10 mph in the morning.

    High: 74 °F

    Sunny then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 61. South wind around 15 mph, with gusts as high as 30 mph.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 61 °F

    Mostly Cloudy
    then Showers
    Likely

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm, then a chance of showers and thunderstorms after 1pm.  Cloudy, with a high near 80. West wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 56. West wind around 5 mph becoming calm  in the evening.

    Low: 56 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm.  Cloudy, with a high near 68. East wind around 5 mph.  Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 68 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm.  Cloudy, with a low around 58. Chance of precipitation is 70%.

    Low: 58 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 53. Northwest wind around 5 mph.
Sunday
A 30 percent chance of showers, mainly before 3pm. Increasing clouds, with a high near 70. North wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 43. Northwest wind around 5 mph becoming calm in the evening.
Monday
A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 74. Light and variable wind becoming southeast 5 to 10 mph in the morning.
Monday Night
Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 80. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56. West wind around 5 mph becoming calm in the evening.
Wednesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 68. East wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 58. Chance of precipitation is 70%.
Thursday
A 50 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 73.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 54.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 74.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Fort Atkinson WI
 42.92°N 88.84°W (Elev. 797 ft)
7:33 pm CDT Sep 12, 2026
7pm CDT Sep 12, 2026-6pm CDT Sep 19, 2026
 
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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