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

34°F

1°C

Humidity 81%
Wind Speed S 5 mph
Barometer 30.03 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 19 Mar 12:15 am CDT
Extended Forecast for

Alden IL

  • Overnight

    Overnight: A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 29. Southwest wind around 5 mph becoming calm.

    Low: 29 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A 10 percent chance of showers before 7am. Mostly sunny, with a high near 48. South wind around 5 mph becoming east in the afternoon.

    High: 48 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 34. East wind 5 to 10 mph becoming southwest after midnight.

    Low: 34 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 59. West southwest wind around 10 mph, with gusts as high as 15 mph.

    High: 59 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 37. North northwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 37 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 50.

    High: 50 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 29. Southwest wind around 5 mph becoming calm.
Thursday
A 10 percent chance of showers before 7am. Mostly sunny, with a high near 48. South wind around 5 mph becoming east in the afternoon.
Thursday Night
Mostly cloudy, with a low around 34. East wind 5 to 10 mph becoming southwest after midnight.
Friday
Mostly cloudy, with a high near 59. West southwest wind around 10 mph, with gusts as high as 15 mph.
Friday Night
Mostly cloudy, with a low around 37. North northwest wind around 5 mph, with gusts as high as 10 mph.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 40.
Sunday
Mostly cloudy, with a high near 50.
Sunday Night
Mostly cloudy, with a low around 25.
Monday
Mostly sunny, with a high near 42.
Monday Night
Mostly cloudy, with a low around 27.
Tuesday
Mostly cloudy, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
Mostly cloudy, with a high near 54.
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:
9:46 pm CDT Mar 18, 2026
Forecast Valid:
12am CDT Mar 19, 2026-6pm CDT Mar 25, 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