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.

Fog/Mist

73°F

23°C

Humidity 94%
Wind Speed W 7 mph
Barometer 29.98 in
Dewpoint 72°F (22°C)
Visibility 6.00 mi
Last update 16 Aug 7:45 am CDT
Extended Forecast for

3 Miles W Harvard IL

  • Today

    Today: A 20 percent chance of showers after 2pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 82. West northwest wind 5 to 15 mph.

    High: 82 °F

    Patchy Fog
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 63. North northwest wind 5 to 10 mph.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80. North northeast wind 5 to 10 mph becoming northwest in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61. Calm wind becoming southwest around 5 mph after midnight.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. West southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 81 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.

    Low: 62 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 76.

    High: 76 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of showers after 2pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 82. West northwest wind 5 to 15 mph.
Tonight
Partly cloudy, with a low around 63. North northwest wind 5 to 10 mph.
Monday
Mostly sunny, with a high near 80. North northeast wind 5 to 10 mph becoming northwest in the afternoon.
Monday Night
Partly cloudy, with a low around 61. Calm wind becoming southwest around 5 mph after midnight.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. West southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 78.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Harvard IL
 42.42°N 88.67°W
Last Update:
8:15 am CDT Aug 16, 2026
Forecast Valid:
8am CDT Aug 16, 2026-6pm CDT Aug 22, 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