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

44°F

7°C

Humidity 83%
Wind Speed W 12 G 22 mph
Barometer 29.89 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 7 Mar 3:15 pm CST
Extended Forecast for

Mendota IL

  • This Afternoon

    This Afternoon: Cloudy, with a steady temperature around 41. West northwest wind around 15 mph, with gusts as high as 30 mph.

    High: 41 °F

    Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 33. West northwest wind 5 to 15 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 33 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 64. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 64 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 44. Southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 44 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 70. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 74. Chance of precipitation is 60%.

    High: 74 °F

    Sunny then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Cloudy, with a low around 39. Breezy.

    Low: 39 °F

    Showers and
    Breezy

  • Wednesday

    Wednesday: Showers, mainly before noon. Cloudy, with a high near 52. Breezy.

    High: 52 °F

    Showers and
    Breezy

Detailed Forecast

This Afternoon
Cloudy, with a steady temperature around 41. West northwest wind around 15 mph, with gusts as high as 30 mph.
Tonight
Mostly cloudy, with a low around 33. West northwest wind 5 to 15 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 64. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Clear, with a low around 44. Southwest wind around 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 70. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 74. Chance of precipitation is 60%.
Tuesday Night
Showers and possibly a thunderstorm. Cloudy, with a low around 39. Breezy.
Wednesday
Showers, mainly before noon. Cloudy, with a high near 52. Breezy.
Wednesday Night
Partly cloudy, with a low around 25. Blustery.
Thursday
Mostly sunny, with a high near 47.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 37. Breezy.
Friday
Mostly cloudy, with a high near 58. Breezy.
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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:
2:31 pm CST Mar 7, 2026
Forecast Valid:
3pm CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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