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

41°F

5°C

Humidity 73%
Wind Speed Calm
Barometer 30.28 in
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 4 Nov 7:35 am CST
Extended Forecast for

Mendota IL

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 64. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 64 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 49. South southeast wind 10 to 15 mph becoming west southwest after midnight. Winds could gust as high as 20 mph.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 60. Breezy, with a northwest wind 15 to 20 mph becoming northwest 10 to 15 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 60 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 32. Northwest wind around 5 mph becoming calm in the evening.

    Low: 32 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 58. Light east wind becoming south southeast 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 58 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of rain before midnight, then rain and possibly a thunderstorm between midnight and 3am, then rain after 3am. Low around 48. Chance of precipitation is 80%.

    Low: 48 °F

    Chance Rain
    then Rain

  • Friday

    Friday: A 30 percent chance of rain before noon. Mostly sunny, with a high near 62.

    High: 62 °F

    Chance Rain
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of rain after noon. Partly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny
    then Chance
    Rain

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 64. South wind 5 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 49. South southeast wind 10 to 15 mph becoming west southwest after midnight. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 60. Breezy, with a northwest wind 15 to 20 mph becoming northwest 10 to 15 mph in the afternoon. Winds could gust as high as 35 mph.
Wednesday Night
Mostly clear, with a low around 32. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 58. Light east wind becoming south southeast 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Thursday Night
A chance of rain before midnight, then rain and possibly a thunderstorm between midnight and 3am, then rain after 3am. Low around 48. Chance of precipitation is 80%.
Friday
A 30 percent chance of rain before noon. Mostly sunny, with a high near 62.
Friday Night
Partly cloudy, with a low around 36.
Saturday
A chance of rain after noon. Partly sunny, with a high near 51.
Saturday Night
A chance of rain before midnight. Mostly cloudy, with a low around 33.
Sunday
Mostly sunny, with a high near 40.
Sunday Night
Partly cloudy, with a low around 22.
Monday
Sunny, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.56°N 89.1°W
Last Update:
6:06 am CST Nov 4, 2025
Forecast Valid:
8am CST Nov 4, 2025-6pm CST Nov 10, 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