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

30°F

-1°C

Humidity 64%
Wind Speed SW 13 mph
Barometer 30.18 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 12 Jan 5:39 am CST
Extended Forecast for

Mendota IL

  • Today

    Today: Sunny, with a high near 43. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 43 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 32. Southwest wind 10 to 15 mph.

    Low: 32 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 48. West wind around 15 mph, with gusts as high as 25 mph.

    High: 48 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 32. West northwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 32 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of snow showers. Mostly cloudy, with a high near 33. Breezy, with a north wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 33 °F

    Chance Snow
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 14. Blustery.

    Low: 14 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 26.

    High: 26 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 21.

    Low: 21 °F

    Chance Snow

  • Friday

    Friday: Scattered snow showers. Mostly cloudy, with a high near 33.

    High: 33 °F

    Scattered
    Snow Showers

Detailed Forecast

Today
Sunny, with a high near 43. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Increasing clouds, with a low around 32. Southwest wind 10 to 15 mph.
Tuesday
Partly sunny, with a high near 48. West wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly cloudy, with a low around 32. West northwest wind around 15 mph, with gusts as high as 25 mph.
Wednesday
A 40 percent chance of snow showers. Mostly cloudy, with a high near 33. Breezy, with a north wind 15 to 25 mph, with gusts as high as 35 mph.
Wednesday Night
Partly cloudy, with a low around 14. Blustery.
Thursday
Mostly sunny, with a high near 26.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 21.
Friday
Scattered snow showers. Mostly cloudy, with a high near 33.
Friday Night
Scattered snow showers, mainly before midnight. Mostly cloudy, with a low around 16.
Saturday
A chance of snow showers. Mostly cloudy, with a high near 19.
Saturday Night
Mostly cloudy, with a low around 4.
Sunday
Partly sunny, with a high near 17.
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:
2:31 am CST Jan 12, 2026
Forecast Valid:
6am CST Jan 12, 2026-6pm CST Jan 18, 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