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

Widespread Rain from Texas to the Central Appalachians; Heavy to Excessive Rainfall in Southern California and the Southwest

Scattered thunderstorms and widespread showers are expected from the Texas coast to the central Appalachians today. Heavy to excessive rainfall will continue in southern California into the Desert Southwest through Saturday. Heavy rain will pose a risk of flash flooding, especially across burn scar and urbanized regions. Read More >

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fog/Mist

46°F

8°C

Humidity 92%
Wind Speed N 6 mph
Barometer 30.05 in
Dewpoint 44°F (7°C)
Visibility 5.00 mi
Wind Chill43°F (6°C)
Last update 21 Nov 9:35 am CST
Extended Forecast for

Mendota IL

  • Today

    Today: A 20 percent chance of rain after 4pm. Cloudy, with a high near 49. North wind around 5 mph.

    High: 49 °F

    Cloudy then
    Slight Chance
    Rain

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 30. North northeast wind around 5 mph becoming calm after midnight.

    Low: 30 °F

    Gradual
    Clearing

  • Saturday

    Saturday: Sunny, with a high near 52. Calm wind becoming southwest around 5 mph in the afternoon. Winds could gust as high as 15 mph.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34. Southwest wind around 5 mph becoming west northwest after midnight. Winds could gust as high as 15 mph.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 56. West northwest wind around 5 mph becoming south southwest in the afternoon. Winds could gust as high as 10 mph.

    High: 56 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Monday

    Monday: A 50 percent chance of rain after noon. Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy
    then Chance
    Rain

  • Monday Night

    Monday Night: Rain. Cloudy, with a low around 45.

    Low: 45 °F

    Rain

  • Tuesday

    Tuesday: A chance of rain. Mostly cloudy, with a high near 56.

    High: 56 °F

    Chance Rain

Detailed Forecast

Today
A 20 percent chance of rain after 4pm. Cloudy, with a high near 49. North wind around 5 mph.
Tonight
Cloudy during the early evening, then gradual clearing, with a low around 30. North northeast wind around 5 mph becoming calm after midnight.
Saturday
Sunny, with a high near 52. Calm wind becoming southwest around 5 mph in the afternoon. Winds could gust as high as 15 mph.
Saturday Night
Mostly clear, with a low around 34. Southwest wind around 5 mph becoming west northwest after midnight. Winds could gust as high as 15 mph.
Sunday
Sunny, with a high near 56. West northwest wind around 5 mph becoming south southwest in the afternoon. Winds could gust as high as 10 mph.
Sunday Night
Partly cloudy, with a low around 38.
Monday
A 50 percent chance of rain after noon. Mostly cloudy, with a high near 55.
Monday Night
Rain. Cloudy, with a low around 45.
Tuesday
A chance of rain. Mostly cloudy, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Partly sunny, with a high near 40.
Wednesday Night
Partly cloudy, with a low around 22.
Thanksgiving Day
Mostly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.13°W
Last Update:
6:36 am CST Nov 21, 2025
Forecast Valid:
9am CST Nov 21, 2025-6pm CST Nov 27, 2025
 
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