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

Storm Impacting the Southwest U.S.

A slow moving weather disturbance will continue to bring periodic rain showers, a few isolated thunderstorms, and a localized flash flooding across the Southwest. The threat will expand into the Southern Plains Wednesday night. Moderate to heavy snow across the Sierra Nevada and southern Utah Ranges will continue into the overnight period. Read More >

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fog/Mist

43°F

6°C

Humidity 93%
Wind Speed NE 6 mph
Barometer 30.07 in
Dewpoint 41°F (5°C)
Visibility 5.00 mi
Wind Chill39°F (4°C)
Last update 18 Nov 8:35 pm CST
Extended Forecast for

Mendota IL

  • Tonight

    Tonight: Patchy drizzle before 11pm. Cloudy, with a low around 41. Northeast wind around 5 mph.

    Low: 41 °F

    Patchy
    Drizzle then
    Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 44. East southeast wind around 5 mph.

    High: 44 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of rain after noon. Mostly cloudy, with a high near 57. Calm wind becoming south around 5 mph in the morning. Winds could gust as high as 15 mph.

    High: 57 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 36. Southwest wind around 5 mph becoming north after midnight. Winds could gust as high as 10 mph.

    Low: 36 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of rain after noon. Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy drizzle before 11pm. Cloudy, with a low around 41. Northeast wind around 5 mph.
Wednesday
Cloudy, with a high near 44. East southeast wind around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 38. Calm wind.
Thursday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 57. Calm wind becoming south around 5 mph in the morning. Winds could gust as high as 15 mph.
Thursday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 36. Southwest wind around 5 mph becoming north after midnight. Winds could gust as high as 10 mph.
Friday
A 20 percent chance of rain after noon. Partly sunny, with a high near 51.
Friday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 32.
Saturday
Sunny, with a high near 51.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 37.
Monday
Mostly sunny, with a high near 55.
Monday Night
A chance of rain. Mostly cloudy, with a low around 35.
Tuesday
A chance of rain. Mostly cloudy, with a high near 50.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.1°W
Last Update:
8:46 pm CST Nov 18, 2025
Forecast Valid:
8pm CST Nov 18, 2025-6pm CST Nov 25, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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