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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

45°F

7°C

Humidity 71%
Wind Speed SE 9 mph
Barometer 30.03 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 4 Mar 6:45 pm CST
Extended Forecast for

Harvard IL

  • Tonight

    Tonight: Scattered showers before 9pm, then isolated showers after 3am. Patchy fog. Otherwise, mostly cloudy, with a low around 39. East northeast wind around 5 mph. Chance of precipitation is 30%.

    Low: 39 °F

    Scattered
    Showers and
    Patchy Fog

  • Thursday

    Thursday: Scattered showers, mainly before 9am. Patchy fog. Otherwise, cloudy, with a high near 48. East northeast wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 48 °F

    Scattered
    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 3am. Patchy fog. Otherwise, cloudy, with a low around 38. Calm wind becoming southeast around 5 mph after midnight. Winds could gust as high as 10 mph.

    Low: 38 °F

    Patchy Fog
    then Slight
    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: A chance of showers and thunderstorms before 9am, then showers and possibly a thunderstorm between 9am and 3pm, then a chance of showers and thunderstorms after 3pm. Patchy fog before noon. High near 69. Southeast wind 10 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%.

    High: 69 °F

    Showers and
    Patchy Fog

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 9pm, then showers and possibly a thunderstorm between 9pm and 3am, then showers after 3am. Low around 48. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    Low: 48 °F

    Showers

  • Saturday

    Saturday: A 30 percent chance of showers before noon. Partly sunny, with a high near 55.

    High: 55 °F

    Chance
    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 58. Breezy.

    High: 58 °F

    Mostly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Tonight
Scattered showers before 9pm, then isolated showers after 3am. Patchy fog. Otherwise, mostly cloudy, with a low around 39. East northeast wind around 5 mph. Chance of precipitation is 30%.
Thursday
Scattered showers, mainly before 9am. Patchy fog. Otherwise, cloudy, with a high near 48. East northeast wind 5 to 10 mph. Chance of precipitation is 30%.
Thursday Night
A 20 percent chance of showers after 3am. Patchy fog. Otherwise, cloudy, with a low around 38. Calm wind becoming southeast around 5 mph after midnight. Winds could gust as high as 10 mph.
Friday
A chance of showers and thunderstorms before 9am, then showers and possibly a thunderstorm between 9am and 3pm, then a chance of showers and thunderstorms after 3pm. Patchy fog before noon. High near 69. Southeast wind 10 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Friday Night
A chance of showers and thunderstorms before 9pm, then showers and possibly a thunderstorm between 9pm and 3am, then showers after 3am. Low around 48. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Saturday
A 30 percent chance of showers before noon. Partly sunny, with a high near 55.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Mostly sunny, with a high near 58. Breezy.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 68.
Monday Night
A chance of showers. Partly cloudy, with a low around 46.
Tuesday
Showers likely. Mostly cloudy, with a high near 60. Breezy.
Tuesday Night
Rain and snow showers. Cloudy, with a low around 33.
Wednesday
A chance of rain and snow showers. Mostly cloudy, with a high near 43.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harvard IL
 42.42°N 88.61°W
Last Update:
4:46 pm CST Mar 4, 2026
Forecast Valid:
7pm CST Mar 4, 2026-6pm CDT Mar 11, 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