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.

Partly Cloudy

54°F

12°C

Humidity 46%
Wind Speed W 15 G 23 mph
Barometer 30.21 in
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 5 Apr 5:35 pm CDT
Extended Forecast for

Mendota IL

  • Tonight

    Tonight: Scattered showers between midnight and 2am. Partly cloudy, with a low around 35. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 35 °F

    Mostly Clear
    then
    Scattered
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 49. Northwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 49 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. Northwest wind 10 to 15 mph becoming north northeast after midnight. Winds could gust as high as 20 mph.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 44. Northeast wind around 5 mph becoming east southeast in the afternoon. Winds could gust as high as 15 mph.

    High: 44 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. East southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 66. Breezy.

    High: 66 °F

    Partly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers. Partly sunny, with a high near 68.

    High: 68 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers

Detailed Forecast

Tonight
Scattered showers between midnight and 2am. Partly cloudy, with a low around 35. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 49. Northwest wind 10 to 15 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 26. Northwest wind 10 to 15 mph becoming north northeast after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 44. Northeast wind around 5 mph becoming east southeast in the afternoon. Winds could gust as high as 15 mph.
Tuesday Night
Mostly cloudy, with a low around 36. East southeast wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 66. Breezy.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 52.
Thursday
A chance of showers. Partly sunny, with a high near 68.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 46.
Friday
A chance of showers. Partly sunny, with a high near 62.
Friday Night
A chance of showers. Mostly cloudy, with a low around 44.
Saturday
A chance of showers. Partly sunny, with a high near 66.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 53.
Sunday
Showers likely. Mostly cloudy, with a high near 76.
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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:
3:46 pm CDT Apr 5, 2026
Forecast Valid:
5pm CDT Apr 5, 2026-6pm CDT Apr 12, 2026
 
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