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

9°F

-13°C

Humidity 92%
Wind Speed Calm
Barometer 30.37 in
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Last update 1 Feb 4:00 am CST
Extended Forecast for

Mendota IL

  • Today

    Today: A 20 percent chance of snow after 3pm. Increasing clouds, with a high near 26. Wind chill values as low as zero. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 26 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Tonight

    Tonight: Snow likely, mainly before midnight. Cloudy, with a steady temperature around 21. South southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 21 °F

    Snow Likely

  • Monday

    Monday: Partly sunny, with a high near 30. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 30 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 16. North northwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 16 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 28. North wind 5 to 10 mph.

    High: 28 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 9.

    Low: 9 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 27.

    High: 27 °F

    Sunny

  • Wednesday Night

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

    Low: 14 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 36.

    High: 36 °F

    Partly Sunny

Detailed Forecast

Today
A 20 percent chance of snow after 3pm. Increasing clouds, with a high near 26. Wind chill values as low as zero. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Tonight
Snow likely, mainly before midnight. Cloudy, with a steady temperature around 21. South southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday
Partly sunny, with a high near 30. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 16. North northwest wind around 5 mph, with gusts as high as 10 mph.
Tuesday
Mostly sunny, with a high near 28. North wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 9.
Wednesday
Sunny, with a high near 27.
Wednesday Night
Partly cloudy, with a low around 14.
Thursday
Partly sunny, with a high near 36.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 28.
Friday
Partly sunny, with a high near 36.
Friday Night
Partly cloudy, with a low around 11.
Saturday
Mostly sunny, with a high near 23.
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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:
3:11 am CST Feb 1, 2026
Forecast Valid:
4am CST Feb 1, 2026-6pm CST Feb 7, 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