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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fog

37°F

3°C

Humidity 100%
Wind Speed E 3 mph
Barometer 29.99 in
Dewpoint 37°F (3°C)
Visibility 0.25 mi
Last update 5 Mar 12:35 am CST
Extended Forecast for

2 Miles NW Alden IL

Dense Fog Advisory March 5, 12:53am until March 5, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory March 5, 12:53am until March 5, 12:00pm

    NOW until 12:00pm Thu

    Dense Fog Advisory

  • Overnight

    Low: 38 °F

    Slight Chance
    Showers and
    Patchy Dense
    Fog

  • Thursday

    Thursday: A 20 percent chance of showers before 1pm. Areas of dense fog. Otherwise, cloudy, with a high near 47. Northeast wind 5 to 10 mph.

    High: 47 °F

    Slight Chance
    Showers and
    Areas Dense
    Fog

  • Thursday Night

    Thursday Night: Patchy fog. Otherwise, cloudy, with a low around 39. East northeast wind 5 to 10 mph becoming southeast in the evening.

    Low: 39 °F

    Patchy Fog

  • Friday

    Friday: Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms, mainly between noon and 3pm. Patchy fog before noon. High near 68. Southeast wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%.

    High: 68 °F

    Showers and
    Patchy Fog
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers and thunderstorms likely before midnight, then showers and possibly a thunderstorm between midnight and 3am, then showers after 3am. Low around 51. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

    Low: 51 °F

    Breezy.
    Showers
    Likely then
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before 9am. Partly sunny, with a high near 55. Breezy.

    High: 55 °F

    Breezy.
    Slight Chance
    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59. Breezy.

    High: 59 °F

    Sunny and
    Breezy

Detailed Forecast

Overnight
A 20 percent chance of showers. Patchy dense fog. Otherwise, cloudy, with a low around 38. East northeast wind around 5 mph.
Thursday
A 20 percent chance of showers before 1pm. Areas of dense fog. Otherwise, cloudy, with a high near 47. Northeast wind 5 to 10 mph.
Thursday Night
Patchy fog. Otherwise, cloudy, with a low around 39. East northeast wind 5 to 10 mph becoming southeast in the evening.
Friday
Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms, mainly between noon and 3pm. Patchy fog before noon. High near 68. Southeast wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%.
Friday Night
Showers and thunderstorms likely before midnight, then showers and possibly a thunderstorm between midnight and 3am, then showers after 3am. Low around 51. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Saturday
A 20 percent chance of showers before 9am. Partly sunny, with a high near 55. Breezy.
Saturday Night
Mostly clear, with a low around 32.
Sunday
Sunny, with a high near 59. Breezy.
Sunday Night
Mostly clear, with a low around 45.
Monday
Sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 45.
Tuesday
Showers likely. Partly sunny, with a high near 64.
Tuesday Night
Showers. Cloudy, with a low around 38.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 48. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Alden IL
 42.48°N 88.55°W
Last Update:
12:21 am CST Mar 5, 2026
Forecast Valid:
12am CST Mar 5, 2026-6pm CDT Mar 11, 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