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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy

45°F

7°C

Humidity 61%
Wind Speed NE 13 mph
Barometer 30.05 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 1 May 6:45 pm CDT
Extended Forecast for

4 Miles W Fort Atkinson WI

Freeze Warning May 2, 12:00am until May 2, 08:00am
Click here for hazard details and duration
Freeze Warning

  • Tonight

    Tonight: Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 31. Calm wind becoming northeast around 5 mph.

    Low: 31 °F

    Partly Cloudy
    then Frost

  • Saturday

    Saturday: Widespread frost before 8am. Otherwise, mostly sunny, with a high near 55. Light and variable wind becoming northwest 5 to 10 mph in the morning.

    High: 55 °F

    Frost then
    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 42. Southwest wind 5 to 10 mph.

    Low: 42 °F

    Mostly Cloudy

  • Sunday

    Sunday: Scattered showers. Partly sunny, with a high near 64. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 64 °F

    Scattered
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43. West wind 5 to 10 mph becoming light in the evening.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 73. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 73 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 43. West wind 5 to 10 mph. Chance of precipitation is 40%.

    Low: 43 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 59. Northwest wind 5 to 10 mph.

    High: 59 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 31. Calm wind becoming northeast around 5 mph.
Saturday
Widespread frost before 8am. Otherwise, mostly sunny, with a high near 55. Light and variable wind becoming northwest 5 to 10 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 42. Southwest wind 5 to 10 mph.
Sunday
Scattered showers. Partly sunny, with a high near 64. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around 43. West wind 5 to 10 mph becoming light in the evening.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 73. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 43. West wind 5 to 10 mph. Chance of precipitation is 40%.
Tuesday
A 30 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 59. Northwest wind 5 to 10 mph.
Tuesday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 38.
Wednesday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 56.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 37.
Thursday
A 30 percent chance of showers. Mostly sunny, with a high near 57.
Thursday Night
Partly cloudy, with a low around 37.
Friday
Mostly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Fort Atkinson WI
 42.93°N 88.93°W (Elev. 853 ft)
Last Update:
7:21 pm CDT May 1, 2026
Forecast Valid:
7pm CDT May 1, 2026-6pm CDT May 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation