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

9°F

-13°C

Humidity 61%
Wind Speed W 10 mph
Barometer 30.35 in
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Wind Chill-5°F (-21°C)
Last update 19 Jan 10:19 pm CST
Extended Forecast for

Mendota IL

  • Tonight

    Tonight: Partly cloudy, with a low around 2. Wind chill values as low as -9. West southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 2 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 24. Wind chill values as low as -8. West southwest wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 15 mph.

    High: 24 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Snow likely, mainly after midnight. Cloudy, with a temperature rising to around 27 by 3am. South southeast wind 5 to 10 mph becoming west southwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 21 °F⇑

    Chance Snow
    then Snow
    Likely

  • Wednesday

    Wednesday: Partly sunny, with a high near 30. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 30 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 13. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 13 °F

    Chance Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 22.

    High: 22 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -6.

    Low: -6 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny and cold, with a high near -1.

    High: -1 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -11.

    Low: -11 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 2. Wind chill values as low as -9. West southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
Increasing clouds, with a high near 24. Wind chill values as low as -8. West southwest wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 15 mph.
Tuesday Night
Snow likely, mainly after midnight. Cloudy, with a temperature rising to around 27 by 3am. South southeast wind 5 to 10 mph becoming west southwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday
Partly sunny, with a high near 30. West wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 13. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny, with a high near 22.
Thursday Night
Mostly cloudy, with a low around -6.
Friday
Partly sunny and cold, with a high near -1.
Friday Night
Mostly cloudy, with a low around -11.
Saturday
Partly sunny and cold, with a high near 4.
Saturday Night
Mostly cloudy, with a low around -6.
Sunday
Mostly sunny, with a high near 12.
Sunday Night
Partly cloudy, with a low around 2.
Monday
Mostly sunny, with a high near 20.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.13°W
Last Update:
8:51 pm CST Jan 19, 2026
Forecast Valid:
10pm CST Jan 19, 2026-6pm CST Jan 26, 2026
 
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Additional Resources

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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