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.

Mostly Cloudy

63°F

17°C

Humidity 25%
Wind Speed SW 13 G 22 mph
Barometer 29.72 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 27 Feb 2:45 pm CST
Extended Forecast for

Alden IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 62. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 62 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 25. West wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 25 mph.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: A 40 percent chance of snow, mainly between 11am and 4pm. Mostly cloudy, with a high near 32. North wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 15 mph.

    High: 32 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 17. North wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 17 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 30. North northeast wind 5 to 10 mph.

    High: 30 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 17.

    Low: 17 °F

    Slight Chance
    Snow

  • Monday

    Monday: Partly sunny, with a high near 39.

    High: 39 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of rain after midnight. Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday

    Tuesday: A chance of rain. Mostly cloudy, with a high near 41.

    High: 41 °F

    Chance Rain

Detailed Forecast

This Afternoon
Sunny, with a high near 62. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 25. West wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 25 mph.
Saturday
A 40 percent chance of snow, mainly between 11am and 4pm. Mostly cloudy, with a high near 32. North wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 15 mph.
Saturday Night
Mostly cloudy, with a low around 17. North wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 30. North northeast wind 5 to 10 mph.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 17.
Monday
Partly sunny, with a high near 39.
Monday Night
A chance of rain after midnight. Mostly cloudy, with a low around 28.
Tuesday
A chance of rain. Mostly cloudy, with a high near 41.
Tuesday Night
A chance of rain before midnight. Partly cloudy, with a low around 29.
Wednesday
A chance of rain. Partly sunny, with a high near 47.
Wednesday Night
Rain likely. Cloudy, with a low around 35.
Thursday
Rain likely. Cloudy, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alden IL
 42.46°N 88.52°W
Last Update:
3:21 pm CST Feb 27, 2026
Forecast Valid:
3pm CST Feb 27, 2026-6pm CST Mar 5, 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