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

32°F

0°C

Humidity 66%
Wind Speed N 15 G 18 mph
Barometer 30.39 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 23 Mar 8:30 am CDT
Extended Forecast for

Mendota IL

  • Today

    Today: Sunny, with a high near 46. North wind around 10 mph, with gusts as high as 20 mph.

    High: 46 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 30. East northeast wind 5 to 10 mph becoming south southeast after midnight.

    Low: 30 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 55. South wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 37. South wind around 5 mph, with gusts as high as 15 mph.

    Low: 37 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 67. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 67 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers before 1am. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 46. North wind around 10 mph, with gusts as high as 20 mph.
Tonight
Increasing clouds, with a low around 30. East northeast wind 5 to 10 mph becoming south southeast after midnight.
Tuesday
Partly sunny, with a high near 55. South wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday Night
Partly cloudy, with a low around 37. South wind around 5 mph, with gusts as high as 15 mph.
Wednesday
Partly sunny, with a high near 67. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 50.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80.
Thursday Night
A chance of showers before 1am. Mostly cloudy, with a low around 32.
Friday
Mostly sunny, with a high near 45.
Friday Night
Mostly clear, with a low around 26.
Saturday
Sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
Partly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.1°W
Last Update:
6:56 am CDT Mar 23, 2026
Forecast Valid:
8am CDT Mar 23, 2026-6pm CDT Mar 29, 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