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

46°F

8°C

Humidity 62%
Wind Speed W 15 G 23 mph
Barometer 29.67 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 13 Jan 10:59 am CST
Extended Forecast for

Mendota IL

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 50. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 50 °F

    Decreasing
    Clouds and
    Breezy

  • Tonight

    Tonight: Scattered flurries after 3am. Mostly cloudy, with a low around 25. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 35 mph.

    Low: 25 °F

    Mostly Cloudy
    then
    Scattered
    Flurries and
    Blustery

  • Wednesday

    Wednesday: Scattered flurries before 8am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 22 by 5pm. Blustery, with a north northwest wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 27 °F⇓

    Scattered
    Flurries and
    Blustery

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 12. Wind chill values as low as zero. North northwest wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 12 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 26. North northwest wind around 10 mph becoming south southwest in the afternoon. Winds could gust as high as 15 mph.

    High: 26 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Snow. Low around 22. Chance of precipitation is 80%.

    Low: 22 °F

    Snow

  • Friday

    Friday: A chance of snow before noon, then snow showers likely after noon. Mostly cloudy, with a high near 34. Chance of precipitation is 60%.

    High: 34 °F

    Chance Snow
    then Snow
    Showers
    Likely

  • Friday Night

    Friday Night: A chance of snow showers. Mostly cloudy, with a low around 13.

    Low: 13 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: A chance of snow showers after noon. Mostly cloudy, with a high near 17.

    High: 17 °F

    Mostly Cloudy
    then Chance
    Snow Showers

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 50. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Scattered flurries after 3am. Mostly cloudy, with a low around 25. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 35 mph.
Wednesday
Scattered flurries before 8am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 22 by 5pm. Blustery, with a north northwest wind 20 to 25 mph, with gusts as high as 35 mph.
Wednesday Night
Mostly clear, with a low around 12. Wind chill values as low as zero. North northwest wind 10 to 15 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 26. North northwest wind around 10 mph becoming south southwest in the afternoon. Winds could gust as high as 15 mph.
Thursday Night
Snow. Low around 22. Chance of precipitation is 80%.
Friday
A chance of snow before noon, then snow showers likely after noon. Mostly cloudy, with a high near 34. Chance of precipitation is 60%.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 13.
Saturday
A chance of snow showers after noon. Mostly cloudy, with a high near 17.
Saturday Night
Mostly cloudy, with a low around 5.
Sunday
Partly sunny, with a high near 16.
Sunday Night
Mostly cloudy, with a low around 4.
M.L.King Day
Partly sunny, with a high near 18.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.13°W
Last Update:
11:06 am CST Jan 13, 2026
Forecast Valid:
11am CST Jan 13, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation