National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fog

32°F

0°C

Humidity 93%
Wind Speed SW 3 mph
Barometer 29.96 in
Dewpoint 30°F (-1°C)
Visibility 0.15 mi
Last update 15 Feb 7:21 am CST
Extended Forecast for

La Salle IL

Dense Fog Advisory February 15, 07:43am until February 15, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory February 15, 07:43am until February 15, 10:00am

    NOW until 10:00am Sun

    Dense Fog Advisory

  • Today

    High: 59 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 36. West northwest wind 5 to 10 mph becoming south southwest after midnight.

    Low: 36 °F

    Increasing
    Clouds

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 63. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 63 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 40. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 40 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 59. Southeast wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 59 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of rain, then a chance of rain and thunderstorms after midnight. Mostly cloudy, with a low around 53. Breezy. Chance of precipitation is 50%.

    Low: 53 °F

    Slight Chance
    Rain then
    Chance Rain
    and Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 65. Breezy.

    High: 65 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Today
Patchy fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 59. West wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 36. West northwest wind 5 to 10 mph becoming south southwest after midnight.
Washington's Birthday
Mostly sunny, with a high near 63. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Monday Night
Increasing clouds, with a low around 40. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
Mostly cloudy, with a high near 59. Southeast wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tuesday Night
A slight chance of rain, then a chance of rain and thunderstorms after midnight. Mostly cloudy, with a low around 53. Breezy. Chance of precipitation is 50%.
Wednesday
Sunny, with a high near 65. Breezy.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
A chance of rain after noon. Partly sunny, with a high near 58.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 32.
Friday
A chance of rain and snow. Partly sunny, with a high near 43.
Friday Night
Mostly cloudy, with a low around 24.
Saturday
Partly sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
La Salle IL
 41.34°N 89.09°W
Last Update:
7:32 am CST Feb 15, 2026
Forecast Valid:
7am CST Feb 15, 2026-6pm CST Feb 21, 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