National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

34°F

1°C

Humidity 41%
Wind Speed S 9 mph
Barometer 29.88 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 26 Feb 11:45 am CST
Extended Forecast for

5 Miles SW Fort Atkinson WI

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 40. Southwest wind around 10 mph.

    High: 40 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 27. Southwest wind around 5 mph.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 58. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 58 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 23. West wind 5 to 10 mph becoming northwest after midnight.

    Low: 23 °F

    Partly Cloudy

  • Saturday

    Saturday: Snow likely, mainly after noon. Cloudy, with a high near 28. North wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    High: 28 °F

    Snow Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 11. North wind around 5 mph.

    Low: 11 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 30. North wind around 5 mph.

    High: 30 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 14. East wind around 5 mph.

    Low: 14 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Monday

    Monday: Mostly cloudy through mid morning, then becoming sunny, with a high near 35.

    High: 35 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 40. Southwest wind around 10 mph.
Tonight
Mostly clear, with a low around 27. Southwest wind around 5 mph.
Friday
Sunny, with a high near 58. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Partly cloudy, with a low around 23. West wind 5 to 10 mph becoming northwest after midnight.
Saturday
Snow likely, mainly after noon. Cloudy, with a high near 28. North wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 11. North wind around 5 mph.
Sunday
Mostly sunny, with a high near 30. North wind around 5 mph.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 14. East wind around 5 mph.
Monday
Mostly cloudy through mid morning, then becoming sunny, with a high near 35.
Monday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 21.
Tuesday
A 20 percent chance of snow. Partly sunny, with a high near 42.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
A 20 percent chance of rain. Partly sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Fort Atkinson WI
 42.88°N 88.9°W (Elev. 814 ft)
Last Update:
11:22 am CST Feb 26, 2026
Forecast Valid:
12pm CST Feb 26, 2026-6pm CST Mar 4, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation