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

57°F

14°C

Humidity 63%
Wind Speed W 6 mph
Barometer 29.91 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 7 Oct 7:45 pm CDT
Extended Forecast for

Alden IL

  • Tonight

    Tonight: Mostly clear, with a low around 48. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 67. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 67 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 47. West northwest wind around 5 mph becoming calm in the evening.

    Low: 47 °F

    Decreasing
    Clouds

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 70. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 70 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 48. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday
Sunny, with a high near 67. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 47. West northwest wind around 5 mph becoming calm in the evening.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 70. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 58. South wind around 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 57.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 55.
Columbus Day
Partly sunny, with a high near 74.
Monday Night
A chance of showers. Mostly cloudy, with a low around 47.
Tuesday
Partly sunny, with a high near 61.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Mostly sunny, with a high near 60.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alden IL
 42.46°N 88.52°W
Last Update:
8:31 pm CDT Oct 7, 2026
Forecast Valid:
8pm CDT Oct 7, 2026-6pm CDT Oct 14, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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