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.

Fair

79°F

26°C

Humidity 42%
Wind Speed N 6 mph
Barometer 30.08 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 20 Aug 2:00 pm CDT
Extended Forecast for

2 Miles NW Mendota IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 77. Northeast wind around 5 mph becoming calm.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 79. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 79 °F

    Partly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms likely, mainly before 10pm. Cloudy during the evening, then partly cloudy overnight, with a low around 63. South southwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 60%.

    Low: 63 °F

    T-storms
    Likely then
    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 78. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 57.

    Low: 57 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 77. Northeast wind around 5 mph becoming calm.
Tonight
Mostly clear, with a low around 58. Calm wind.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 79. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Friday Night
Showers and thunderstorms likely, mainly before 10pm. Cloudy during the evening, then partly cloudy overnight, with a low around 63. South southwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 60%.
Saturday
Sunny, with a high near 78. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Clear, with a low around 57.
Sunday
Sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Mendota IL
 41.56°N 89.13°W
Last Update:
1:26 pm CDT Aug 20, 2026
Forecast Valid:
2pm CDT Aug 20, 2026-6pm CDT Aug 26, 2026
 
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Additional Resources

Radar & Satellite Image

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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