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.

Overcast

19°F

-7°C

Humidity 81%
Wind Speed SE 9 mph
Barometer 30.14 in
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill8°F (-13°C)
Last update 8 Dec 9:15 pm CST
Extended Forecast for

Mendota IL

  • Tonight

    Tonight: A chance of flurries with a slight chance of snow before 1am, then a chance of flurries between 1am and 3am. Mostly cloudy, with a temperature rising to around 24 by 5am. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    Low: 16 °F⇑

    Cloudy then
    Slight Chance
    Snow

  • Tuesday

    Tuesday: A chance of rain or freezing rain after 5pm. Mostly cloudy, with a high near 35. West southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 35 °F

    Mostly Cloudy
    then Chance
    Rain/Freezing
    Rain

  • Tuesday Night

    Tuesday Night: Freezing rain, possibly mixed with rain, becoming all rain after 7pm. Low around 30. Breezy, with a south wind 15 to 25 mph becoming west after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. Little or no ice accumulation expected.

    Low: 30 °F

    Breezy.
    Rain/Freezing
    Rain then
    Chance Rain

  • Wednesday

    Wednesday: A 50 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 32. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 32 °F

    Breezy.
    Chance Snow
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 14. West northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 14 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 22.

    High: 22 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 10.

    Low: 10 °F

    Chance Snow

  • Friday

    Friday: A chance of snow. Mostly cloudy, with a high near 20.

    High: 20 °F

    Chance Snow

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -1.

    Low: -1 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of flurries with a slight chance of snow before 1am, then a chance of flurries between 1am and 3am. Mostly cloudy, with a temperature rising to around 24 by 5am. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Tuesday
A chance of rain or freezing rain after 5pm. Mostly cloudy, with a high near 35. West southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Tuesday Night
Freezing rain, possibly mixed with rain, becoming all rain after 7pm. Low around 30. Breezy, with a south wind 15 to 25 mph becoming west after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. Little or no ice accumulation expected.
Wednesday
A 50 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 32. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph.
Wednesday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 14. West northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 22.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 10.
Friday
A chance of snow. Mostly cloudy, with a high near 20.
Friday Night
Mostly cloudy, with a low around -1.
Saturday
Mostly cloudy and cold, with a high near 7.
Saturday Night
Mostly cloudy, with a low around -3.
Sunday
Mostly sunny, with a high near 12.
Sunday Night
Mostly cloudy, with a low around 3.
Monday
Mostly cloudy, with a high near 24.
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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:
8:31 pm CST Dec 8, 2025
Forecast Valid:
9pm CST Dec 8, 2025-6pm CST Dec 15, 2025
 
Forecast Discussion
 
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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