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

38°F

3°C

Humidity 35%
Wind Speed W 14 G 22 mph
Barometer 29.74 in
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 25 Feb 1:10 pm CST
Extended Forecast for

Mendota IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 36. West northwest wind 5 to 15 mph.

    High: 36 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 22. West northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

    Low: 22 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 45. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 45 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30. Southwest wind around 5 mph, with gusts as high as 15 mph.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 62. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 62 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 39.

    High: 39 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of snow after noon. Mostly cloudy, with a high near 32.

    High: 32 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

This Afternoon
Sunny, with a high near 36. West northwest wind 5 to 15 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 22. West northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
Thursday
Mostly sunny, with a high near 45. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Thursday Night
Mostly clear, with a low around 30. Southwest wind around 5 mph, with gusts as high as 15 mph.
Friday
Sunny, with a high near 62. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Partly cloudy, with a low around 29.
Saturday
A 40 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 39.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
A chance of snow after noon. Mostly cloudy, with a high near 32.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 19.
Monday
Mostly sunny, with a high near 34.
Monday Night
A chance of snow. Mostly cloudy, with a low around 20.
Tuesday
A chance of rain. Mostly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.1°W
Last Update:
12:46 pm CST Feb 25, 2026
Forecast Valid:
1pm CST Feb 25, 2026-6pm CST Mar 3, 2026
 
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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