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

34°F

1°C

Humidity 77%
Wind Speed W 6 mph
Barometer 30.20 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 12 Mar 12:15 am CDT
Extended Forecast for

Mendota IL

  • Overnight

    Overnight: Mostly clear, with a low around 28. West northwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 28 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 47. West wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 47 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: A 50 percent chance of showers. Cloudy, with a low around 37. Windy, with a south wind 15 to 20 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 45 mph.

    Low: 37 °F

    Chance
    Showers and
    Windy

  • Friday

    Friday: Mostly sunny, with a high near 46. Very windy, with a west wind 30 to 35 mph, with gusts as high as 50 mph.

    High: 46 °F

    Mostly Sunny
    and Very
    Windy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 28. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 28 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow. Cloudy, with a high near 41.

    High: 41 °F

    Slight Chance
    Snow

  • Saturday Night

    Saturday Night: Rain and snow showers likely, mainly after 1am. Cloudy, with a low around 34. Chance of precipitation is 60%.

    Low: 34 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Sunday

    Sunday: Showers. Cloudy, with a high near 50. Breezy.

    High: 50 °F

    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A chance of rain and snow showers before 1am, then a chance of snow showers. Mostly cloudy, with a low around 16. Blustery.

    Low: 16 °F

    Chance
    Rain/Snow and
    Blustery

Detailed Forecast

Overnight
Mostly clear, with a low around 28. West northwest wind around 10 mph, with gusts as high as 15 mph.
Thursday
Increasing clouds, with a high near 47. West wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
A 50 percent chance of showers. Cloudy, with a low around 37. Windy, with a south wind 15 to 20 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 45 mph.
Friday
Mostly sunny, with a high near 46. Very windy, with a west wind 30 to 35 mph, with gusts as high as 50 mph.
Friday Night
Mostly cloudy, with a low around 28. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday
A 20 percent chance of snow. Cloudy, with a high near 41.
Saturday Night
Rain and snow showers likely, mainly after 1am. Cloudy, with a low around 34. Chance of precipitation is 60%.
Sunday
Showers. Cloudy, with a high near 50. Breezy.
Sunday Night
A chance of rain and snow showers before 1am, then a chance of snow showers. Mostly cloudy, with a low around 16. Blustery.
Monday
Mostly cloudy, with a high near 25. Blustery.
Monday Night
Partly cloudy, with a low around 8.
Tuesday
Mostly sunny, with a high near 30.
Tuesday Night
A chance of snow showers. Mostly cloudy, with a low around 21.
Wednesday
Mostly cloudy, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.1°W
Last Update:
9:51 pm CDT Mar 11, 2026
Forecast Valid:
12am CDT Mar 12, 2026-6pm CDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation