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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

66°F

19°C

Humidity 78%
Wind Speed E 7 mph
Barometer 29.85 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 17 May 11:45 am CDT
Extended Forecast for

5 Miles NNW Shirland IL

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms, mainly before 2pm. Mostly cloudy, with a high near 85. Breezy, with a south wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 85 °F

    Chance
    T-storms and
    Breezy

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 67. South wind around 15 mph, with gusts as high as 30 mph.

    Low: 67 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7am. Mostly cloudy, with a high near 80. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Showers
    Likely and
    Breezy

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 63. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Chance
    T-storms then
    Showers and
    Breezy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 76. Breezy, with a south wind around 20 mph becoming west in the afternoon. Winds could gust as high as 35 mph.

    High: 76 °F

    Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 46. Northwest wind 10 to 15 mph.

    Low: 46 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 63. North wind around 10 mph.

    High: 63 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41. Northeast wind 5 to 10 mph.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms, mainly before 2pm. Mostly cloudy, with a high near 85. Breezy, with a south wind 15 to 20 mph, with gusts as high as 25 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 67. South wind around 15 mph, with gusts as high as 30 mph.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7am. Mostly cloudy, with a high near 80. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 63. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A 40 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 76. Breezy, with a south wind around 20 mph becoming west in the afternoon. Winds could gust as high as 35 mph.
Tuesday Night
Mostly cloudy, with a low around 46. Northwest wind 10 to 15 mph.
Wednesday
Mostly sunny, with a high near 63. North wind around 10 mph.
Wednesday Night
Partly cloudy, with a low around 41. Northeast wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Partly sunny, with a high near 70.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 48.
Saturday
Partly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNW Shirland IL
 42.54°N 89.22°W (Elev. 850 ft)
Last Update:
10:33 am CDT May 17, 2026
Forecast Valid:
12pm CDT May 17, 2026-6pm CDT May 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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