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.

Partly Cloudy

28°F

-2°C

Humidity 100%
Wind Speed Calm
Barometer 30.17 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 9 Jan 7:45 pm CST
Extended Forecast for

2 Miles NW Harvard IL

  • Tonight

    Tonight: Rain and snow likely, becoming all snow after 5am. Increasing clouds, with a low around 31. Calm wind becoming south around 5 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 31 °F

    Partly Cloudy
    then
    Rain/Snow
    Likely

  • Saturday

    Saturday: Snow before noon, then a chance of snow showers after noon. High near 33. West northwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 33 °F

    Snow then
    Chance Snow
    Showers

  • Saturday Night

    Saturday Night: Scattered snow showers, mainly before midnight. Mostly cloudy, with a low around 18. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    Low: 18 °F

    Scattered
    Snow Showers
    and Blustery

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 30. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 30 °F

    Partly Sunny
    and Blustery
    then Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 22. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 22 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Monday Night

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

    Low: 29 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain. Mostly cloudy, with a high near 43.

    High: 43 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A chance of snow after midnight. Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Rain and snow likely, becoming all snow after 5am. Increasing clouds, with a low around 31. Calm wind becoming south around 5 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.
Saturday
Snow before noon, then a chance of snow showers after noon. High near 33. West northwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Saturday Night
Scattered snow showers, mainly before midnight. Mostly cloudy, with a low around 18. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 30. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Partly cloudy, with a low around 22. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 39.
Monday Night
Mostly cloudy, with a low around 29.
Tuesday
A chance of rain. Mostly cloudy, with a high near 43.
Tuesday Night
A chance of snow after midnight. Mostly cloudy, with a low around 26.
Wednesday
A chance of snow. Mostly cloudy, with a high near 30.
Wednesday Night
Mostly cloudy, with a low around 14.
Thursday
Partly sunny, with a high near 26.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 19.
Friday
A chance of snow. Mostly cloudy, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Harvard IL
 42.44°N 88.64°W
Last Update:
6:01 pm CST Jan 9, 2026
Forecast Valid:
8pm CST Jan 9, 2026-6pm CST Jan 16, 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