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

43°F

6°C

Humidity 82%
Wind Speed SE 8 mph
Barometer 29.85 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 20 Mar 3:50 am CDT
Extended Forecast for

Mendota IL

  • Today

    Today: Partly sunny, with a high near 69. West southwest wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 69 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. North northeast wind 5 to 10 mph becoming east after midnight.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 70. Southeast wind 5 to 10 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 70 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 53. South southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 67. Breezy, with a southwest wind 10 to 20 mph becoming north in the morning. Winds could gust as high as 30 mph.

    High: 67 °F

    Slight Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

Detailed Forecast

Today
Partly sunny, with a high near 69. West southwest wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Tonight
Mostly cloudy, with a low around 40. North northeast wind 5 to 10 mph becoming east after midnight.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 70. Southeast wind 5 to 10 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Mostly clear, with a low around 53. South southwest wind around 10 mph, with gusts as high as 20 mph.
Sunday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 67. Breezy, with a southwest wind 10 to 20 mph becoming north in the morning. Winds could gust as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 32.
Monday
Sunny, with a high near 49.
Monday Night
Partly cloudy, with a low around 34.
Tuesday
Mostly cloudy, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Partly sunny, with a high near 56.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Mostly sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.1°W
Last Update:
3:26 am CDT Mar 20, 2026
Forecast Valid:
4am CDT Mar 20, 2026-6pm CDT Mar 26, 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