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.

Light Snow

27°F

-3°C

Humidity 74%
Wind Speed N 10 mph
Barometer 30.22 in
Dewpoint 19°F (-7°C)
Visibility 2.00 mi
Wind Chill18°F (-8°C)
Last update 28 Feb 2:45 pm CST
Extended Forecast for

5 Miles WSW Fort Atkinson WI

Winter Weather Advisory until February 28, 08:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until February 28, 08:00pm

    NOW until 8:00pm Sat

    Winter Weather Advisory

  • This Afternoon

    High: 29 °F

    Snow Likely

  • Tonight

    Tonight: A 50 percent chance of snow before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 14. North wind 5 to 10 mph.

    Low: 14 °F

    Chance Snow
    then Mostly
    Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 31. North wind around 5 mph.

    High: 31 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17. Calm wind.

    Low: 17 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 41. South wind 5 to 10 mph.

    High: 41 °F

    Sunny

  • Monday Night

    Monday Night: A slight chance of snow before 9pm, then rain likely, possibly mixed with snow. Mostly cloudy, with a low around 30. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Slight Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Tuesday

    Tuesday: Rain likely, mainly before noon. Mostly cloudy, with a high near 44. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 44 °F

    Rain Likely
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain. Partly cloudy, with a low around 29. Northeast wind around 5 mph.

    Low: 29 °F

    Slight Chance
    Rain

Detailed Forecast

This Afternoon
Snow likely. Cloudy, with a high near 29. Northeast wind around 10 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than one inch possible.
Tonight
A 50 percent chance of snow before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 14. North wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 31. North wind around 5 mph.
Sunday Night
Partly cloudy, with a low around 17. Calm wind.
Monday
Sunny, with a high near 41. South wind 5 to 10 mph.
Monday Night
A slight chance of snow before 9pm, then rain likely, possibly mixed with snow. Mostly cloudy, with a low around 30. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Tuesday
Rain likely, mainly before noon. Mostly cloudy, with a high near 44. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A 20 percent chance of rain. Partly cloudy, with a low around 29. Northeast wind around 5 mph.
Wednesday
A 40 percent chance of rain. Partly sunny, with a high near 49.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 35.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 54.
Thursday Night
A 40 percent chance of rain. Cloudy, with a low around 39.
Friday
Rain likely. Mostly cloudy, with a high near 59. Chance of precipitation is 60%.
Friday Night
Rain likely. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.
Saturday
A 40 percent chance of rain. Mostly cloudy, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Fort Atkinson WI
 42.88°N 88.93°W (Elev. 774 ft)
Last Update:
2:36 pm CST Feb 28, 2026
Forecast Valid:
3pm CST Feb 28, 2026-6pm CST Mar 7, 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