National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

59°F

15°C

Humidity 88%
Wind Speed W 10 mph
Barometer 29.47 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 18 Jun 3:30 am CDT
Extended Forecast for

3 Miles SSE Shirland IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 58. West wind around 15 mph, with gusts as high as 25 mph.

    Low: 58 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 73. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 73 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 52. West northwest wind 5 to 10 mph.

    Low: 52 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 76. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 56. West southwest wind around 5 mph, with gusts as high as 15 mph.

    Low: 56 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Showers likely. Mostly cloudy, with a high near 72.

    High: 72 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 58. West wind around 15 mph, with gusts as high as 25 mph.
Thursday
Partly sunny, with a high near 73. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 52. West northwest wind 5 to 10 mph.
Juneteenth
Sunny, with a high near 76. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 56. West southwest wind around 5 mph, with gusts as high as 15 mph.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 56.
Sunday
Showers likely. Mostly cloudy, with a high near 72.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 52.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 54.
Wednesday
A chance of showers. Mostly sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Shirland IL
 42.44°N 89.2°W
Last Update:
3:36 am CDT Jun 18, 2026
Forecast Valid:
3am CDT Jun 18, 2026-6pm CDT Jun 24, 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