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

41°F

5°C

Humidity 100%
Wind Speed N 8 mph
Barometer 30.18 in
Dewpoint 41°F (5°C)
Visibility 3.00 mi
Wind Chill36°F (2°C)
Last update 19 Nov 5:15 am CST
Extended Forecast for

Mendota IL

  • Today

    Today: Cloudy, with a high near 45. Northeast wind around 5 mph becoming calm in the afternoon.

    High: 45 °F

    Cloudy

  • Tonight

    Tonight: Cloudy, with a low around 40. Calm wind becoming southeast around 5 mph.

    Low: 40 °F

    Cloudy

  • Thursday

    Thursday: 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

    Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 42. South southwest wind around 5 mph becoming north northeast after midnight. Winds could gust as high as 10 mph.

    Low: 42 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 53. Northeast wind 5 to 10 mph.

    High: 53 °F

    Chance Rain

  • Friday Night

    Friday Night: A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Chance Rain

  • Saturday

    Saturday: A 20 percent chance of rain before noon. Mostly sunny, with a high near 53.

    High: 53 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Saturday Night

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

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

Detailed Forecast

Today
Cloudy, with a high near 45. Northeast wind around 5 mph becoming calm in the afternoon.
Tonight
Cloudy, with a low around 40. Calm wind becoming southeast around 5 mph.
Thursday
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
Mostly cloudy, with a low around 42. South southwest wind around 5 mph becoming north northeast after midnight. Winds could gust as high as 10 mph.
Friday
A 30 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 53. Northeast wind 5 to 10 mph.
Friday Night
A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 34.
Saturday
A 20 percent chance of rain before noon. Mostly sunny, with a high near 53.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Sunny, with a high near 56.
Sunday Night
Partly cloudy, with a low around 36.
Monday
Mostly sunny, with a high near 54.
Monday Night
Partly cloudy, with a low around 36.
Tuesday
A chance of rain. Partly sunny, with a high near 51.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.13°W
Last Update:
3:51 am CST Nov 19, 2025
Forecast Valid:
5am CST Nov 19, 2025-6pm CST Nov 25, 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