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.

Fair

9°F

-13°C

Humidity 78%
Wind Speed W 7 mph
Barometer 30.06 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill-2°F (-19°C)
Last update 17 Mar 4:55 am CDT
Extended Forecast for

Alden IL

  • Today

    Today: Increasing clouds, with a high near 20. Wind chill values as low as -15. Northwest wind around 10 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph.

    High: 20 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Snow. Low around 17. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    Low: 17 °F

    Snow Likely
    then Snow

  • Wednesday

    Wednesday: Snow likely before 7am. Mostly cloudy, with a high near 38. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 38 °F

    Snow Likely
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 33. Southwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 33 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 46. South southwest wind around 5 mph becoming northwest in the afternoon. Winds could gust as high as 10 mph.

    High: 46 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 53.

    High: 53 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 20. Wind chill values as low as -15. Northwest wind around 10 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph.
Tonight
Snow. Low around 17. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Wednesday
Snow likely before 7am. Mostly cloudy, with a high near 38. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 33. Southwest wind around 5 mph, with gusts as high as 10 mph.
Thursday
Mostly sunny, with a high near 46. South southwest wind around 5 mph becoming northwest in the afternoon. Winds could gust as high as 10 mph.
Thursday Night
Mostly cloudy, with a low around 33.
Friday
Mostly cloudy, with a high near 53.
Friday Night
Mostly cloudy, with a low around 35.
Saturday
Mostly sunny, with a high near 60.
Saturday Night
Mostly cloudy, with a low around 38.
Sunday
Mostly cloudy, with a high near 53.
Sunday Night
Mostly cloudy, with a low around 27.
Monday
Mostly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alden IL
 42.46°N 88.52°W
Last Update:
4:45 am CDT Mar 17, 2026
Forecast Valid:
5am CDT Mar 17, 2026-6pm CDT Mar 23, 2026
 
Forecast Discussion
 
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Additional Resources

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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