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

48°F

9°C

Humidity 82%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 8 Oct 1:50 am CDT
Extended Forecast for

Shirland IL

  • Overnight

    Overnight: Partly cloudy, with a low around 48. Northwest wind around 5 mph.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 69. Light west northwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 15 mph.

    High: 69 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49. West northwest wind around 5 mph becoming calm.

    Low: 49 °F

    Partly Cloudy

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly before 3pm. Increasing clouds, with a high near 73. Light east southeast wind becoming south southeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 73 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 48. Northwest wind around 5 mph.
Thursday
Mostly sunny, with a high near 69. Light west northwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 15 mph.
Thursday Night
Partly cloudy, with a low around 49. West northwest wind around 5 mph becoming calm.
Friday
A 50 percent chance of showers and thunderstorms, mainly before 3pm. Increasing clouds, with a high near 73. Light east southeast wind becoming south southeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Friday Night
Mostly clear, with a low around 59. South wind around 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 75.
Sunday Night
Mostly clear, with a low around 56.
Columbus Day
Mostly sunny, with a high near 77.
Monday Night
A chance of showers. Mostly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 63.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Shirland IL
 42.46°N 89.2°W
Last Update:
1:21 am CDT Oct 8, 2026
Forecast Valid:
2am CDT Oct 8, 2026-6pm CDT Oct 14, 2026
 
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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