National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Overcast

70°F

21°C

Humidity 88%
Wind Speed N 15 G 24 mph
Barometer 29.76 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 1 Aug 4:19 pm CDT
Extended Forecast for

Mendota IL

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm. Cloudy, with a high near 71. Breezy, with a north northeast wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Showers
    Likely and
    Breezy

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 64. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 64 °F

    Chance
    Showers and
    Breezy then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 77. North northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 77 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 59 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 79. East northeast wind around 5 mph, with gusts as high as 10 mph.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm. Cloudy, with a high near 71. Breezy, with a north northeast wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 30 percent chance of showers and thunderstorms before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 64. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 77. North northeast wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 59. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Monday
Sunny, with a high near 79. East northeast wind around 5 mph, with gusts as high as 10 mph.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 64.
Friday
Mostly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 67.
Saturday
Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.56°N 89.13°W
Last Update:
4:16 pm CDT Aug 1, 2026
Forecast Valid:
4pm CDT Aug 1, 2026-6pm CDT Aug 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