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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy

32°F

0°C

Humidity 87%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 7 May 4:55 am CDT
Extended Forecast for

4 Miles W Fort Atkinson WI

Frost Advisory until May 7, 08:00am
Click here for hazard details and duration
Frost Advisory
  •  
    Frost Advisory until May 7, 08:00am

    NOW until 8:00am Thu

    Frost Advisory

  • Overnight

    Low: 29 °F

    Frost

  • Thursday

    Thursday: A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm, then a slight chance of showers after 4pm. Widespread frost, mainly before 7am. Otherwise, mostly cloudy, with a high near 58. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 58 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 37. Northwest wind around 5 mph becoming calm in the evening.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Areas of frost before 7am. Otherwise, partly sunny, with a high near 64. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 64 °F

    Areas Frost
    then Partly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 45. Southwest wind 5 to 10 mph.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers. Mostly sunny, with a high near 68. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 68 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. Northwest wind 5 to 10 mph becoming light in the evening.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 59. Northwest wind 5 to 15 mph.

    High: 59 °F

    Mostly Sunny

Detailed Forecast

Overnight
Widespread frost. Otherwise, partly cloudy, with a low around 29. Calm wind.
Thursday
A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm, then a slight chance of showers after 4pm. Widespread frost, mainly before 7am. Otherwise, mostly cloudy, with a high near 58. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 37. Northwest wind around 5 mph becoming calm in the evening.
Friday
Areas of frost before 7am. Otherwise, partly sunny, with a high near 64. Light south wind becoming southwest 5 to 10 mph in the morning.
Friday Night
Partly cloudy, with a low around 45. Southwest wind 5 to 10 mph.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 68. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 40. Northwest wind 5 to 10 mph becoming light in the evening.
Sunday
Mostly sunny, with a high near 59. Northwest wind 5 to 15 mph.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Sunny, with a high near 61.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 41.
Tuesday
Showers likely. Partly sunny, with a high near 63. Chance of precipitation is 60%.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 44.
Wednesday
Mostly sunny, with a high near 67.
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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:
4:16 am CDT May 7, 2026
Forecast Valid:
5am CDT May 7, 2026-6pm CDT May 13, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation