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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Mendota IL

  • Today

    Today: Partly sunny, with a high near 53. South wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 53 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. Southeast wind around 5 mph.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 70. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 70 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 53. South wind 5 to 10 mph.

    Low: 53 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 78. South southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 78 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 40%.

    Low: 32 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 53. South wind 5 to 10 mph, with gusts as high as 15 mph.
Tonight
Mostly cloudy, with a low around 37. Southeast wind around 5 mph.
Wednesday
Partly sunny, with a high near 70. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 53. South wind 5 to 10 mph.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 78. South southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 40%.
Friday
Mostly sunny, with a high near 46.
Friday Night
Mostly clear, with a low around 26.
Saturday
Sunny, with a high near 53.
Saturday Night
Partly cloudy, with a low around 36.
Sunday
Partly sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.13°W
Last Update:
6:36 am CDT Mar 24, 2026
Forecast Valid:
6am CDT Mar 24, 2026-6pm CDT Mar 30, 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