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

36°F

2°C

Humidity 93%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 10 Nov 3:35 am CST
Extended Forecast for

Harvard IL

  • Overnight

    Overnight: Mostly clear, with a low around 40. West northwest wind around 5 mph.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 61. North wind around 5 mph becoming calm in the afternoon.

    High: 61 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 5am. Increasing clouds, with a low around 39. Calm wind.

    Low: 39 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Veterans Day

    Veterans Day: A 40 percent chance of showers, mainly before 3pm. Mostly cloudy, with a high near 52. Light and variable wind becoming north northeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 52 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33. North wind around 10 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers before noon. Partly sunny, with a high near 43.

    High: 43 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 40. West northwest wind around 5 mph.
Tuesday
Sunny, with a high near 61. North wind around 5 mph becoming calm in the afternoon.
Tuesday Night
A 20 percent chance of showers after 5am. Increasing clouds, with a low around 39. Calm wind.
Veterans Day
A 40 percent chance of showers, mainly before 3pm. Mostly cloudy, with a high near 52. Light and variable wind becoming north northeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Wednesday Night
Mostly cloudy, with a low around 33. North wind around 10 mph, with gusts as high as 20 mph.
Thursday
A 20 percent chance of showers before noon. Partly sunny, with a high near 43.
Thursday Night
Partly cloudy, with a low around 27.
Friday
Mostly sunny, with a high near 42.
Friday Night
Mostly clear, with a low around 24.
Saturday
Sunny, with a high near 44.
Saturday Night
Mostly clear, with a low around 27.
Sunday
Sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 33.
Monday
Mostly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harvard IL
 42.44°N 88.61°W
Last Update:
1:46 am CST Nov 10, 2026
Forecast Valid:
3am CST Nov 10, 2026-6pm CST Nov 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