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

45°F

7°C

Humidity 84%
Wind Speed SE 12 mph
Barometer 29.85 in
Dewpoint 40°F (4°C)
Visibility 7.00 mi
Wind Chill39°F (4°C)
Last update 25 Dec 11:35 pm CST
Extended Forecast for

Mendota IL

  • Tonight

    Tonight: Areas of drizzle with scattered showers before 1am, then periods of showers or drizzle after 1am. Patchy fog. Temperature rising to around 46 by 4am. East southeast wind 5 to 15 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F⇑

    Showers and
    Patchy Fog

  • Friday

    Friday: Areas of drizzle with scattered showers before 8am, then patchy drizzle with isolated sprinkles between 8am and 11am. Areas of fog before noon. Otherwise, cloudy, with a high near 51. South southeast wind 5 to 10 mph becoming west northwest 10 to 15 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

    High: 51 °F

    Areas Drizzle
    and Areas Fog
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 36. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

    Low: 36 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 52. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 52 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of rain after midnight. Cloudy, with a low around 46. Southeast wind 5 to 10 mph becoming south southwest after midnight. Winds could gust as high as 15 mph.

    Low: 46 °F

    Cloudy then
    Chance Rain

  • Sunday

    Sunday: Rain likely, mainly after noon. Cloudy, with a high near 51. Chance of precipitation is 70%.

    High: 51 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A chance of rain and snow before midnight, then a slight chance of snow. Mostly cloudy, with a low around 15. Blustery. Chance of precipitation is 40%.

    Low: 15 °F

    Blustery.
    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Monday

    Monday: Mostly sunny, with a high near 22. Blustery.

    High: 22 °F

    Mostly Sunny
    and Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 12.

    Low: 12 °F

    Mostly Clear

Detailed Forecast

Tonight
Areas of drizzle with scattered showers before 1am, then periods of showers or drizzle after 1am. Patchy fog. Temperature rising to around 46 by 4am. East southeast wind 5 to 15 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Areas of drizzle with scattered showers before 8am, then patchy drizzle with isolated sprinkles between 8am and 11am. Areas of fog before noon. Otherwise, cloudy, with a high near 51. South southeast wind 5 to 10 mph becoming west northwest 10 to 15 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Friday Night
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 36. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
Saturday
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 52. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A 30 percent chance of rain after midnight. Cloudy, with a low around 46. Southeast wind 5 to 10 mph becoming south southwest after midnight. Winds could gust as high as 15 mph.
Sunday
Rain likely, mainly after noon. Cloudy, with a high near 51. Chance of precipitation is 70%.
Sunday Night
A chance of rain and snow before midnight, then a slight chance of snow. Mostly cloudy, with a low around 15. Blustery. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 22. Blustery.
Monday Night
Mostly clear, with a low around 12.
Tuesday
Mostly sunny, with a high near 28.
Tuesday Night
Mostly cloudy, with a low around 19.
Wednesday
Partly sunny, with a high near 30.
Wednesday Night
Mostly cloudy, with a low around 14.
New Year's Day
Mostly sunny, with a high near 26.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.1°W
Last Update:
10:01 pm CST Dec 25, 2025
Forecast Valid:
11pm CST Dec 25, 2025-6pm CST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

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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