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.

Partly Cloudy

29°C

84°F

Humidity 45%
Wind Speed W 13 km/h
Barometer 29.93 in
Dewpoint 16°C (61°F)
Visibility 16 km
Heat Index29°C (84°F)
Last update 2 Jul 6:45 pm CDT
Extended Forecast for

Harvard IL

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 18. West southwest wind 5 to 10 km/h.

    Low: 18 °C

    Slight Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Sunny, with a high near 31. West southwest wind 5 to 10 km/h.

    High: 31 °C

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 21. South southeast wind 5 to 10 km/h.

    Low: 21 °C

    Chance
    T-storms

  • Independence Day

    Independence Day: Mostly sunny, with a high near 32. Heat index values as high as 36. South southwest wind 5 to 15 km/h, with gusts as high as 25 km/h.

    High: 32 °C

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 22. South southwest wind around 10 km/h, with gusts as high as 25 km/h.

    Low: 22 °C

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 33.

    High: 33 °C

    Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 22.

    Low: 22 °C

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 29.

    High: 29 °C

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers before 1am. Partly cloudy, with a low around 17.

    Low: 17 °C

    Chance
    Showers

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 18. West southwest wind 5 to 10 km/h.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Sunny, with a high near 31. West southwest wind 5 to 10 km/h.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 21. South southeast wind 5 to 10 km/h.
Independence Day
Mostly sunny, with a high near 32. Heat index values as high as 36. South southwest wind 5 to 15 km/h, with gusts as high as 25 km/h.
Friday Night
Mostly clear, with a low around 22. South southwest wind around 10 km/h, with gusts as high as 25 km/h.
Saturday
Sunny, with a high near 33.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 22.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 29.
Sunday Night
A chance of showers before 1am. Partly cloudy, with a low around 17.
Monday
Mostly sunny, with a high near 27.
Monday Night
Partly cloudy, with a low around 16.
Tuesday
Mostly sunny, with a high near 28.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 17.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harvard IL
 42.42°N 88.61°W
Last Update:
4:12 pm CDT Jul 2, 2025
Forecast Valid:
7pm CDT Jul 2, 2025-6pm CDT Jul 9, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation