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.

Overcast

40°F

4°C

Humidity 69%
Wind Speed S 9 mph
Barometer 30.27 in
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 29 Mar 3:15 am CDT
Extended Forecast for

La Salle IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 38. South wind around 10 mph, with gusts as high as 15 mph.

    Low: 38 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 65. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 65 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 51. South wind 10 to 15 mph.

    Low: 51 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 80. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 62. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    Low: 62 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 79. Breezy. Chance of precipitation is 70%.

    High: 79 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 40. Chance of precipitation is 70%.

    Low: 40 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers after 1pm. Mostly cloudy, with a high near 48.

    High: 48 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 38. South wind around 10 mph, with gusts as high as 15 mph.
Sunday
Mostly sunny, with a high near 65. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 51. South wind 10 to 15 mph.
Monday
Sunny, with a high near 80. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 62. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 79. Breezy. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 40. Chance of precipitation is 70%.
Wednesday
A chance of showers after 1pm. Mostly cloudy, with a high near 48.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 34.
Thursday
Showers likely. Mostly cloudy, with a high near 49.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 38.
Friday
Mostly cloudy, with a high near 65.
Friday Night
A chance of showers. Mostly cloudy, with a low around 49.
Saturday
Showers likely. Mostly cloudy, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
La Salle IL
 41.34°N 89.09°W
Last Update:
3:26 am CDT Mar 29, 2026
Forecast Valid:
3am CDT Mar 29, 2026-6pm CDT Apr 4, 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