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.

Overcast

46°F

8°C

Humidity 32%
Wind Speed S 10 mph
Barometer 30.29 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 24 Mar 12:45 pm CDT
Extended Forecast for

Alden IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 50. South southwest wind around 10 mph, with gusts as high as 15 mph.

    High: 50 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 34. Southeast wind around 5 mph, with gusts as high as 15 mph.

    Low: 34 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 66. Breezy, with a south southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 66 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 50. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 50 °F

    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers after 1pm. Partly sunny, with a high near 72. South southwest wind 5 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

    High: 72 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 28.

    Low: 28 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 50. South southwest wind around 10 mph, with gusts as high as 15 mph.
Tonight
Partly cloudy, with a low around 34. Southeast wind around 5 mph, with gusts as high as 15 mph.
Wednesday
Partly sunny, with a high near 66. Breezy, with a south southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 50. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday
A 50 percent chance of showers after 1pm. Partly sunny, with a high near 72. South southwest wind 5 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 28.
Friday
Mostly sunny, with a high near 43.
Friday Night
Mostly clear, with a low around 25.
Saturday
Sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Partly sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alden IL
 42.46°N 88.52°W
Last Update:
1:30 pm CDT Mar 24, 2026
Forecast Valid:
1pm CDT Mar 24, 2026-6pm CDT Mar 30, 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