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

32°F

0°C

Humidity 80%
Wind Speed Calm
Barometer 29.91 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 16 Feb 2:55 am CST
Extended Forecast for

Alden IL

  • Overnight

    Overnight: Partly cloudy, with a low around 28. Calm wind becoming south southwest around 5 mph.

    Low: 28 °F

    Partly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 61. West southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 61 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 37. West wind around 5 mph becoming east after midnight. Winds could gust as high as 10 mph.

    Low: 37 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 54. Southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 54 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Tuesday Night

    Tuesday Night: Rain likely before midnight, then rain likely and possibly a thunderstorm between midnight and 3am, then rain likely after 3am. Mostly cloudy, with a low around 47. Southeast wind around 15 mph becoming south southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%.

    Low: 47 °F

    Rain Likely

  • Wednesday

    Wednesday: A 20 percent chance of rain before noon. Sunny, with a high near 60. Breezy.

    High: 60 °F

    Breezy.
    Slight Chance
    Rain then
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of rain after noon. Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain likely. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Rain Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 28. Calm wind becoming south southwest around 5 mph.
Washington's Birthday
Mostly sunny, with a high near 61. West southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 37. West wind around 5 mph becoming east after midnight. Winds could gust as high as 10 mph.
Tuesday
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 54. Southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Rain likely before midnight, then rain likely and possibly a thunderstorm between midnight and 3am, then rain likely after 3am. Mostly cloudy, with a low around 47. Southeast wind around 15 mph becoming south southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%.
Wednesday
A 20 percent chance of rain before noon. Sunny, with a high near 60. Breezy.
Wednesday Night
Partly cloudy, with a low around 34.
Thursday
A chance of rain after noon. Mostly sunny, with a high near 53.
Thursday Night
Rain likely. Mostly cloudy, with a low around 32.
Friday
A chance of rain and snow before noon, then a chance of snow. Partly sunny, with a high near 40.
Friday Night
Mostly cloudy, with a low around 25.
Saturday
Partly sunny, with a high near 36.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alden IL
 42.46°N 88.52°W
Last Update:
1:26 am CST Feb 16, 2026
Forecast Valid:
3am CST Feb 16, 2026-6pm CST Feb 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