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

55°F

13°C

Humidity 31%
Wind Speed NW 6 G 9 mph
Barometer 30.10 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 2 May 2:19 pm CDT
Extended Forecast for

Mendota IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 57. West northwest wind around 10 mph, with gusts as high as 15 mph.

    High: 57 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 41. Southwest wind 5 to 10 mph.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers before 1pm. Partly sunny, with a high near 69. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 69 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44. West wind 5 to 10 mph.

    Low: 44 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers after 4pm. Sunny, with a high near 76. Breezy, with a south southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 76 °F

    Sunny then
    Slight Chance
    Showers and
    Breezy

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.

    Low: 49 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A 50 percent chance of showers. Mostly cloudy, with a high near 57.

    High: 57 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers before 1am. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Partly sunny, with a high near 57. West northwest wind around 10 mph, with gusts as high as 15 mph.
Tonight
Partly cloudy, with a low around 41. Southwest wind 5 to 10 mph.
Sunday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 69. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 44. West wind 5 to 10 mph.
Monday
A 20 percent chance of showers after 4pm. Sunny, with a high near 76. Breezy, with a south southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.
Tuesday
A 50 percent chance of showers. Mostly cloudy, with a high near 57.
Tuesday Night
A chance of showers before 1am. Mostly cloudy, with a low around 41.
Wednesday
Mostly cloudy, with a high near 56.
Wednesday Night
Mostly cloudy, with a low around 40.
Thursday
Partly sunny, with a high near 58.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 64.
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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:
12:26 pm CDT May 2, 2026
Forecast Valid:
2pm CDT May 2, 2026-6pm CDT May 8, 2026
 
Forecast Discussion
 
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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