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

64°F

18°C

Humidity 55%
Wind Speed S 12 mph
Barometer 29.63 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 22 Mar 12:15 am CDT
Extended Forecast for

Mendota IL

  • Overnight

    Overnight: Partly cloudy, with a low around 52. South southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers between 11am and 4pm. Mostly cloudy, with a temperature falling to around 47 by 5pm. Breezy, with a north northeast wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 20%.

    High: 52 °F⇓

    Slight Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 29. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 29 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 48. North northeast wind around 5 mph, with gusts as high as 15 mph.

    High: 48 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 32. East northeast wind around 5 mph becoming south southeast after midnight. Winds could gust as high as 10 mph.

    Low: 32 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 52. South southwest wind around 10 mph, with gusts as high as 20 mph.
Sunday
A slight chance of showers between 11am and 4pm. Mostly cloudy, with a temperature falling to around 47 by 5pm. Breezy, with a north northeast wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 29. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 48. North northeast wind around 5 mph, with gusts as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 32. East northeast wind around 5 mph becoming south southeast after midnight. Winds could gust as high as 10 mph.
Tuesday
Partly sunny, with a high near 58.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Mostly cloudy, with a high near 60.
Wednesday Night
Mostly cloudy, with a low around 46.
Thursday
Partly sunny, with a high near 66.
Thursday Night
Mostly cloudy, with a low around 33.
Friday
Partly sunny, with a high near 48.
Friday Night
Partly cloudy, with a low around 29.
Saturday
Mostly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.1°W
Last Update:
8:56 pm CDT Mar 21, 2026
Forecast Valid:
12am CDT Mar 22, 2026-6pm CDT Mar 28, 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