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

86°F

30°C

Humidity 31%
Wind Speed S 12 mph
Barometer 29.99 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 26 May 2:45 pm CDT
Extended Forecast for

Shirland IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 86. South wind around 5 mph.

    High: 86 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 62. South wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms between 3pm and 5pm. Mostly sunny, with a high near 85. Calm wind becoming north northeast around 5 mph in the afternoon. Winds could gust as high as 10 mph. Chance of precipitation is 20%.

    High: 85 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms between 7pm and midnight. Partly cloudy, with a low around 54. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 54 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 76. East northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 76 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 49.

    Low: 49 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 86. South wind around 5 mph.
Tonight
Partly cloudy, with a low around 62. South wind around 5 mph becoming calm in the evening.
Wednesday
A slight chance of showers and thunderstorms between 3pm and 5pm. Mostly sunny, with a high near 85. Calm wind becoming north northeast around 5 mph in the afternoon. Winds could gust as high as 10 mph. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers and thunderstorms between 7pm and midnight. Partly cloudy, with a low around 54. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 76. East northeast wind around 10 mph, with gusts as high as 20 mph.
Thursday Night
Clear, with a low around 49.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 52.
Monday
Sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Shirland IL
 42.46°N 89.2°W
Last Update:
2:46 pm CDT May 26, 2026
Forecast Valid:
3pm CDT May 26, 2026-6pm CDT Jun 1, 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