Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Partly Cloudy

88°F

31°C

Humidity 52%
Wind Speed SW 12 mph
Barometer 29.95 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 15 Jul 4:45 pm CDT
Extended Forecast for

Harvard IL

  • Tonight

    Tonight: Partly cloudy, with a low around 70. South wind around 5 mph becoming calm  in the evening.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 4pm.  Partly sunny, with a high near 87. Heat index values as high as 96. South southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Partly Sunny
    then T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am.  Mostly cloudy, with a low around 64. South southwest wind 5 to 10 mph becoming west northwest after midnight. Winds could gust as high as 15 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    T-storms
    Likely

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms before 1pm.  Mostly cloudy, with a high near 71. North northeast wind around 10 mph, with gusts as high as 15 mph.

    High: 71 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 54. Northeast wind 5 to 10 mph.

    Low: 54 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before 1pm.  Mostly cloudy, with a high near 81.

    High: 81 °F

    T-storms
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening.
Wednesday
Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a high near 87. Heat index values as high as 96. South southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 64. South southwest wind 5 to 10 mph becoming west northwest after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 71. North northeast wind around 10 mph, with gusts as high as 15 mph.
Thursday Night
Partly cloudy, with a low around 54. Northeast wind 5 to 10 mph.
Friday
Sunny, with a high near 76.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 60.
Saturday
Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 81.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Sunday
Partly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 61.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 81.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Tuesday
Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Harvard IL
 42.42°N 88.61°W
4:12 pm CDT Jul 15, 2025
5pm CDT Jul 15, 2025-6pm CDT Jul 22, 2025
 
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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