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

37°F

3°C

Humidity 89%
Wind Speed E 6 mph
Barometer 30.04 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 19 Mar 1:50 am CDT
Extended Forecast for

Mendota IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 61. Calm wind becoming east southeast around 5 mph in the morning.

    High: 61 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 41. East wind around 5 mph becoming west southwest after midnight. Winds could gust as high as 10 mph.

    Low: 41 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 65. West southwest wind around 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 65 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40. North northwest wind around 5 mph becoming east northeast after midnight. Winds could gust as high as 10 mph.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly cloudy, with a high near 66. Breezy.

    High: 66 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 32. Calm wind.
Thursday
Mostly sunny, with a high near 61. Calm wind becoming east southeast around 5 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 41. East wind around 5 mph becoming west southwest after midnight. Winds could gust as high as 10 mph.
Friday
Partly sunny, with a high near 65. West southwest wind around 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 40. North northwest wind around 5 mph becoming east northeast after midnight. Winds could gust as high as 10 mph.
Saturday
Sunny, with a high near 67.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Mostly cloudy, with a high near 66. Breezy.
Sunday Night
Mostly cloudy, with a low around 30.
Monday
Sunny, with a high near 46.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
Mostly cloudy, with a high near 53.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Mostly cloudy, with a high near 60.
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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:
1:20 am CDT Mar 19, 2026
Forecast Valid:
2am CDT Mar 19, 2026-6pm CDT Mar 25, 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