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

71°F

22°C

Humidity 54%
Wind Speed SW 16 mph
Barometer 29.57 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 22 Mar 2:30 am CDT
Extended Forecast for

Mendota IL

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 61. Southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of rain between 1pm and 4pm. Mostly cloudy, with a temperature falling to around 45 by 5pm. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 53 °F⇓

    Mostly Cloudy
    then Slight
    Chance Rain
    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: Mostly sunny, with a high near 48. North wind around 5 mph, with gusts as high as 10 mph.

    High: 48 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30. East wind around 5 mph becoming south southeast after midnight. Winds could gust as high as 10 mph.

    Low: 30 °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 62.

    High: 62 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 61. Southwest wind around 10 mph, with gusts as high as 20 mph.
Sunday
A slight chance of rain between 1pm and 4pm. Mostly cloudy, with a temperature falling to around 45 by 5pm. Breezy, with a north northeast wind 15 to 20 mph, with gusts 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
Mostly sunny, with a high near 48. North wind around 5 mph, with gusts as high as 10 mph.
Monday Night
Mostly cloudy, with a low around 30. East 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 62.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
A chance of showers after 1pm. Partly sunny, with a high near 70.
Thursday Night
Mostly cloudy, with a low around 32.
Friday
Partly sunny, with a high near 46.
Friday Night
Mostly clear, with a low around 27.
Saturday
Sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.1°W
Last Update:
1:21 am CDT Mar 22, 2026
Forecast Valid:
3am 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