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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

34°F

1°C

Humidity 75%
Wind Speed W 6 mph
Barometer 30.05 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 19 Apr 2:15 am CDT
Extended Forecast for

Alden IL

Frost Advisory April 19, 02:40am until April 19, 09:00am
Freeze Warning April 20, 12:00am until April 20, 09:00am
Click here for hazard details and duration
Frost Advisory
Freeze Warning
  •  
    Frost Advisory April 19, 02:40am until April 19, 09:00am

    NOW until 9:00am Sun

    Frost Advisory

  • Overnight

    Low: 31 °F

    Areas Frost

  • Sunday

    Sunday: A 30 percent chance of showers, mainly between 10am and 4pm. Increasing clouds, with a high near 46. West southwest wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph.

    High: 46 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 10 percent chance of showers before 7pm. Widespread frost after midnight. Otherwise, mostly clear, with a low around 27. Northwest wind 5 to 10 mph becoming light north after midnight. Winds could gust as high as 20 mph.

    Low: 27 °F

    Slight Chance
    Showers then
    Frost

  • Monday

    Monday: Widespread frost before 8am. Otherwise, sunny, with a high near 50. Light and variable wind becoming south southwest 5 to 10 mph in the morning.

    High: 50 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 40. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

Detailed Forecast

Overnight
Areas of frost. Otherwise, mostly clear, with a low around 31. West southwest wind around 5 mph.
Sunday
A 30 percent chance of showers, mainly between 10am and 4pm. Increasing clouds, with a high near 46. West southwest wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
A 10 percent chance of showers before 7pm. Widespread frost after midnight. Otherwise, mostly clear, with a low around 27. Northwest wind 5 to 10 mph becoming light north after midnight. Winds could gust as high as 20 mph.
Monday
Widespread frost before 8am. Otherwise, sunny, with a high near 50. Light and variable wind becoming south southwest 5 to 10 mph in the morning.
Monday Night
Partly cloudy, with a low around 40. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 70.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Showers likely. Mostly cloudy, with a low around 59.
Friday
Showers likely. Mostly cloudy, with a high near 69.
Friday Night
A chance of showers. Mostly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alden IL
 42.46°N 88.52°W
Last Update:
1:21 am CDT Apr 19, 2026
Forecast Valid:
2am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation