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

34°F

1°C

Humidity 75%
Wind Speed Calm
Barometer 30.28 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 11 Feb 11:41 pm CST
Extended Forecast for

Mendota IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 26. Northwest wind around 5 mph becoming calm.

    Low: 26 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of snow between 9am and noon. Cloudy through mid morning, then gradual clearing, with a high near 47. Calm wind becoming south southeast around 5 mph. Chance of precipitation is 20%.

    High: 47 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. Southeast wind around 5 mph becoming calm.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 52. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 52 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 30. Southwest wind around 5 mph becoming calm after midnight. Winds could gust as high as 10 mph.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 26. Northwest wind around 5 mph becoming calm.
Thursday
A slight chance of snow between 9am and noon. Cloudy through mid morning, then gradual clearing, with a high near 47. Calm wind becoming south southeast around 5 mph. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 28. Southeast wind around 5 mph becoming calm.
Friday
Sunny, with a high near 52. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
Mostly clear, with a low around 30. Southwest wind around 5 mph becoming calm after midnight. Winds could gust as high as 10 mph.
Saturday
Partly sunny, with a high near 54.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
Sunny, with a high near 56.
Sunday Night
Partly cloudy, with a low around 33.
Washington's Birthday
Mostly cloudy, with a high near 56.
Monday Night
Mostly cloudy, with a low around 40.
Tuesday
Mostly cloudy, with a high near 58.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 48.
Wednesday
A chance of rain. Sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.1°W
Last Update:
9:46 pm CST Feb 11, 2026
Forecast Valid:
11pm CST Feb 11, 2026-6pm CST Feb 18, 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