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.

Overcast

50°F

10°C

Humidity 82%
Wind Speed W 15 G 22 mph
Barometer 29.92 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 16 Oct 3:35 am CDT
Extended Forecast for

Alden IL

Freeze Warning October 17, 05:00am until October 17, 08:00am
Click here for hazard details and duration
...

  • Today

    Today: A 30 percent chance of showers, mainly before 2pm. Mostly cloudy, with a high near 51. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 51 °F

    Chance
    Showers and
    Breezy

  • Tonight

    Tonight: Widespread frost after 5am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 31. North wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.

    Low: 31 °F

    Partly Cloudy
    then Frost

  • Saturday

    Saturday: Widespread frost before 8am. Otherwise, sunny, with a high near 54. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 54 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 35. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 35 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 62. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

Detailed Forecast

Today
A 30 percent chance of showers, mainly before 2pm. Mostly cloudy, with a high near 51. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Widespread frost after 5am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 31. North wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Saturday
Widespread frost before 8am. Otherwise, sunny, with a high near 54. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Saturday Night
Clear, with a low around 35. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday
Sunny, with a high near 62. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 40.
Monday
Mostly sunny, with a high near 66.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 69.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Mostly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alden IL
 42.46°N 88.52°W
Last Update:
3:26 am CDT Oct 16, 2026
Forecast Valid:
4am CDT Oct 16, 2026-6pm CDT Oct 22, 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