National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Overcast

23°F

-5°C

Humidity 82%
Wind Speed W 6 mph
Barometer 30.12 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 21 Feb 6:15 am CST
Extended Forecast for

Mendota IL

  • Today

    Today: Mostly cloudy, with a high near 31. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 31 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 30 percent chance of snow, mainly between 9pm and 3am. Mostly cloudy, with a low around 18. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 18 °F

    Chance Snow

  • Sunday

    Sunday: Mostly cloudy, with a high near 27. Blustery, with a northwest wind around 20 mph, with gusts as high as 30 mph.

    High: 27 °F

    Mostly Cloudy
    and Blustery

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 15. Wind chill values as low as -1. Blustery, with a north northwest wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 15 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 29. North northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 29 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow before noon. Partly sunny, with a high near 42.

    High: 42 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Tuesday Night

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

    Low: 30 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 31. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
A 30 percent chance of snow, mainly between 9pm and 3am. Mostly cloudy, with a low around 18. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Mostly cloudy, with a high near 27. Blustery, with a northwest wind around 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 15. Wind chill values as low as -1. Blustery, with a north northwest wind 15 to 20 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 29. North northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 16.
Tuesday
A 20 percent chance of snow before noon. Partly sunny, with a high near 42.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
Partly sunny, with a high near 49.
Wednesday Night
Mostly cloudy, with a low around 25.
Thursday
Mostly sunny, with a high near 41.
Thursday Night
Partly cloudy, with a low around 24.
Friday
Mostly sunny, with a high near 54.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.1°W
Last Update:
4:06 am CST Feb 21, 2026
Forecast Valid:
6am CST Feb 21, 2026-6pm CST Feb 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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