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 75%
Wind Speed S 5 mph
Barometer 30.06 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 14 Feb 12:41 am CST
Extended Forecast for

Mendota IL

  • Overnight

    Overnight: Partly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 55. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 55 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 33. South southeast wind around 5 mph becoming calm.

    Low: 33 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 59. West wind around 5 mph, with gusts as high as 10 mph.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 38. West northwest wind around 5 mph becoming south southwest after midnight. Winds could gust as high as 10 mph.

    Low: 38 °F

    Partly Cloudy

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Monday Night

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

    Low: 41 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 28. Calm wind.
Saturday
Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 55. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 33. South southeast wind around 5 mph becoming calm.
Sunday
Sunny, with a high near 59. West wind around 5 mph, with gusts as high as 10 mph.
Sunday Night
Partly cloudy, with a low around 38. West northwest wind around 5 mph becoming south southwest after midnight. Winds could gust as high as 10 mph.
Washington's Birthday
Partly sunny, with a high near 61.
Monday Night
Mostly cloudy, with a low around 41.
Tuesday
Mostly cloudy, with a high near 56.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 46.
Wednesday
Partly sunny, with a high near 60. Breezy.
Wednesday Night
Partly cloudy, with a low around 35.
Thursday
A chance of showers. Partly sunny, with a high near 51.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 32.
Friday
Partly sunny, with a high near 43.
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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:
11:56 pm CST Feb 13, 2026
Forecast Valid:
1am CST Feb 14, 2026-6pm CST Feb 20, 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