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

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fair

20°F

-7°C

Humidity 70%
Wind Speed S 3 mph
Barometer 30.20 in
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Last update 24 Feb 1:35 am CST
Extended Forecast for

La Salle IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 18. South wind 5 to 10 mph.

    Low: 18 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of light rain with a slight chance of showers after 5pm. Cloudy, with a high near 47. Breezy, with a south wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 47 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Light Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 24. West northwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 24 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 37. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 37 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 25. North northwest wind around 5 mph becoming east northeast after midnight. Winds could gust as high as 15 mph.

    Low: 25 °F

    Chance Snow

  • Thursday

    Thursday: A 30 percent chance of snow before noon. Mostly sunny, with a high near 41.

    High: 41 °F

    Chance Snow
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Friday Night

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

    Low: 32 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 18. South wind 5 to 10 mph.
Tuesday
A 30 percent chance of light rain with a slight chance of showers after 5pm. Cloudy, with a high near 47. Breezy, with a south wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 24. West northwest wind around 15 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 37. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 25. North northwest wind around 5 mph becoming east northeast after midnight. Winds could gust as high as 15 mph.
Thursday
A 30 percent chance of snow before noon. Mostly sunny, with a high near 41.
Thursday Night
Mostly clear, with a low around 27.
Friday
Sunny, with a high near 57.
Friday Night
Mostly clear, with a low around 32.
Saturday
Mostly sunny, with a high near 47.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
A chance of rain and snow. Partly sunny, with a high near 36.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 21.
Monday
A chance of snow. Partly sunny, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
La Salle IL
 41.34°N 89.09°W
Last Update:
12:16 am CST Feb 24, 2026
Forecast Valid:
1am CST Feb 24, 2026-6pm CST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation