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 63%
Wind Speed Calm
Barometer 29.57 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 22 Mar 2:15 am CDT
Extended Forecast for

4 Miles SE Shirland IL

  • Overnight

    Overnight: Partly cloudy, with a low around 45. West northwest wind 5 to 15 mph becoming northeast.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of rain between noon and 3pm. Mostly cloudy, with a temperature falling to around 40 by 4pm. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 45 °F⇓

    Mostly Cloudy
    then Slight
    Chance Rain
    and Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 27. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 27 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 46. North wind around 5 mph.

    High: 46 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30. East wind around 5 mph becoming south after midnight. Winds could gust as high as 15 mph.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 45. West northwest wind 5 to 15 mph becoming northeast.
Sunday
A slight chance of rain between noon and 3pm. Mostly cloudy, with a temperature falling to around 40 by 4pm. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 27. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 46. North wind around 5 mph.
Monday Night
Mostly cloudy, with a low around 30. East wind around 5 mph becoming south after midnight. Winds could gust as high as 15 mph.
Tuesday
Mostly cloudy, with a high near 55.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Mostly cloudy, with a high near 58.
Wednesday Night
Mostly cloudy, with a low around 44.
Thursday
Mostly cloudy, with a high near 64.
Thursday Night
Mostly cloudy, with a low around 29.
Friday
Mostly sunny, with a high near 44.
Friday Night
Mostly clear, with a low around 26.
Saturday
Sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Shirland IL
 42.41°N 89.14°W
Last Update:
1:21 am CDT Mar 22, 2026
Forecast Valid:
2am CDT Mar 22, 2026-6pm CDT Mar 28, 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