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

61°F

16°C

Humidity 94%
Wind Speed SE 3 mph
Barometer 29.84 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 12 Sep 3:15 am CDT
Extended Forecast for

4 Miles WSW Fort Atkinson WI

  • Overnight

    Overnight: Mostly cloudy, with a low around 62. South wind around 10 mph.

    Low: 62 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 81. South wind 10 to 15 mph becoming northwest in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. Northwest wind around 5 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: A 40 percent chance of showers, mainly before 3pm.  Partly sunny, with a high near 67. North wind 5 to 10 mph.

    High: 67 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47. Northwest wind around 5 mph becoming calm.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers after 1pm.  Increasing clouds, with a high near 70. Southeast wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.

    High: 70 °F

    Mostly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then showers and possibly a thunderstorm after 1am.  Low around 62. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 62 °F

    Breezy.
    Chance
    Showers then
    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm.  Cloudy, with a high near 77. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 62. South wind around 10 mph.
Saturday
Mostly sunny, with a high near 81. South wind 10 to 15 mph becoming northwest in the afternoon.
Saturday Night
Mostly clear, with a low around 54. Northwest wind around 5 mph.
Sunday
A 40 percent chance of showers, mainly before 3pm. Partly sunny, with a high near 67. North wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 47. Northwest wind around 5 mph becoming calm.
Monday
A 30 percent chance of showers after 1pm. Increasing clouds, with a high near 70. Southeast wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.
Monday Night
A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 62. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 77. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. 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. Mostly cloudy, with a low around 56.
Wednesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 72. Chance of precipitation is 60%.
Wednesday Night
Showers likely. The rain could be heavy at times. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 74.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 54.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Fort Atkinson WI
 42.9°N 88.93°W (Elev. 774 ft)
2:37 am CDT Sep 12, 2026
3am CDT Sep 12, 2026-6pm CDT Sep 18, 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