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.

Fair

59°F

15°C

Humidity 88%
Wind Speed Calm
Barometer 30.11 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 24 Aug 11:55 pm CDT
Extended Forecast for

3 Miles SW Edgerton WI

  • Overnight

    Overnight: Mostly clear, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms, mainly between 1am and 4am. Partly cloudy, with a low around 63. South wind 5 to 10 mph.

    Low: 63 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 1pm. Mostly sunny, with a high near 82. Southwest wind 10 to 15 mph becoming west in the afternoon. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. Northwest wind 5 to 10 mph.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 79. North wind 5 to 10 mph.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. Northwest wind around 5 mph becoming calm.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. Calm wind becoming northeast around 5 mph.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 54. Calm wind.
Tuesday
Mostly sunny, with a high near 79. Light south wind becoming southwest 5 to 10 mph in the morning.
Tuesday Night
A 50 percent chance of showers and thunderstorms, mainly between 1am and 4am. Partly cloudy, with a low around 63. South wind 5 to 10 mph.
Wednesday
A slight chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 1pm. Mostly sunny, with a high near 82. Southwest wind 10 to 15 mph becoming west in the afternoon. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 60. Northwest wind 5 to 10 mph.
Thursday
Sunny, with a high near 79. North wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 57. Northwest wind around 5 mph becoming calm.
Friday
Sunny, with a high near 80. Calm wind becoming northeast around 5 mph.
Friday Night
Partly cloudy, with a low around 59.
Saturday
Partly sunny, with a high near 80.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Edgerton WI
 42.8°N 89.12°W (Elev. 814 ft)
Last Update:
11:46 pm CDT Aug 24, 2026
Forecast Valid:
12am CDT Aug 25, 2026-6pm CDT Aug 31, 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