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

57°F

14°C

Humidity 82%
Wind Speed S 8 mph
Barometer 29.77 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 14 Nov 7:45 pm CST
Extended Forecast for

Harvard IL

  • Tonight

    Tonight: Mostly cloudy, with a temperature rising to around 57 by 4am. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 54 °F⇑

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 67. Breezy, with a southwest wind 15 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph.

    High: 67 °F

    Mostly Cloudy
    then Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 46. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 46 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 26. West northwest wind 5 to 10 mph becoming light northwest after midnight.

    Low: 26 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Chance Rain

  • Tuesday

    Tuesday: A chance of rain before noon. Partly sunny, with a high near 43.

    High: 43 °F

    Chance Rain
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a temperature rising to around 57 by 4am. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 67. Breezy, with a southwest wind 15 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Mostly clear, with a low around 32. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 46. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 26. West northwest wind 5 to 10 mph becoming light northwest after midnight.
Monday
Mostly sunny, with a high near 45.
Monday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 33.
Tuesday
A chance of rain before noon. Partly sunny, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Partly sunny, with a high near 46.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 34.
Thursday
Rain likely. Mostly cloudy, with a high near 49.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 35.
Friday
A chance of rain. Partly sunny, with a high near 50.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harvard IL
 42.42°N 88.61°W
Last Update:
7:41 pm CST Nov 14, 2025
Forecast Valid:
8pm CST Nov 14, 2025-6pm CST Nov 21, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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