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

48°F

9°C

Humidity 54%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 30 Mar 12:30 am CDT
Extended Forecast for

Edgerton WI

  • Overnight

    Overnight: Mostly clear, with a low around 43. South wind around 5 mph.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 75. South wind 5 to 10 mph.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: A slight chance of rain and thunderstorms between 9pm and 1am. Mostly cloudy, with a low around 57. South wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 57 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A chance of rain and thunderstorms before 1pm, then rain and possibly a thunderstorm between 1pm and 4pm, then a chance of rain and thunderstorms after 4pm. High near 70. South wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Chance Rain
    then Rain

  • Tuesday Night

    Tuesday Night: A chance of rain and thunderstorms before 7pm, then a chance of rain between 7pm and 1am. Mostly cloudy, with a low around 33. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    Low: 33 °F

    Chance Rain

  • Wednesday

    Wednesday: A chance of rain and snow after 1pm. Mostly cloudy, with a high near 44. East wind 10 to 15 mph. Chance of precipitation is 40%.

    High: 44 °F

    Partly Sunny
    then Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain, possibly mixed with snow, becoming all rain after 4am. Low around 33. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.

    Low: 33 °F

    Rain/Snow

  • Thursday

    Thursday: Rain. High near 49. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    High: 49 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of rain and snow before 10pm, then a chance of rain. Cloudy, with a low around 32. Chance of precipitation is 50%.

    Low: 32 °F

    Chance
    Rain/Snow
    then Chance
    Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 43. South wind around 5 mph.
Monday
Sunny, with a high near 75. South wind 5 to 10 mph.
Monday Night
A slight chance of rain and thunderstorms between 9pm and 1am. Mostly cloudy, with a low around 57. South wind 5 to 10 mph. Chance of precipitation is 20%.
Tuesday
A chance of rain and thunderstorms before 1pm, then rain and possibly a thunderstorm between 1pm and 4pm, then a chance of rain and thunderstorms after 4pm. High near 70. South wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of rain and thunderstorms before 7pm, then a chance of rain between 7pm and 1am. Mostly cloudy, with a low around 33. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Wednesday
A chance of rain and snow after 1pm. Mostly cloudy, with a high near 44. East wind 10 to 15 mph. Chance of precipitation is 40%.
Wednesday Night
Rain, possibly mixed with snow, becoming all rain after 4am. Low around 33. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.
Thursday
Rain. High near 49. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Thursday Night
A chance of rain and snow before 10pm, then a chance of rain. Cloudy, with a low around 32. Chance of precipitation is 50%.
Friday
A 20 percent chance of rain after 1pm. Mostly cloudy, with a high near 49.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 37.
Saturday
Rain likely. Mostly cloudy, with a high near 60. Chance of precipitation is 70%.
Saturday Night
Rain likely. Cloudy, with a low around 39. Chance of precipitation is 60%.
Sunday
A 20 percent chance of rain. Mostly cloudy, with a high near 51. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Edgerton WI
 42.82°N 89.06°W (Elev. 869 ft)
Last Update:
12:32 am CDT Mar 30, 2026
Forecast Valid:
12am CDT Mar 30, 2026-6pm CDT Apr 5, 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