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.

Overcast

16°F

-9°C

Humidity 57%
Wind Speed W 18 G 23 mph
Barometer 29.85 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 17 Jan 2:39 am CST
Extended Forecast for

Mendota IL

  • Overnight

    Overnight: A chance of flurries. Mostly cloudy, with a low around 14. Wind chill values as low as -1. West wind around 15 mph, with gusts as high as 25 mph.

    Low: 14 °F

    Chance
    Flurries

  • Saturday

    Saturday: A slight chance of flurries before noon, then snow, mainly after 3pm. High near 19. Wind chill values as low as -2. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 19 °F

    Mostly Cloudy
    then Snow and
    Breezy

  • Saturday Night

    Saturday Night: Snow likely, mainly before 9pm, then a slight chance of flurries after 10pm. Mostly cloudy, with a low around 8. Wind chill values as low as -6. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 8 °F

    Snow Likely
    then Mostly
    Cloudy

  • Sunday

    Sunday: Snow likely after noon. Increasing clouds, with a high near 20. Wind chill values as low as -7. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 20 °F

    Partly Sunny
    then Snow
    Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 1. Blustery, with a southwest wind 10 to 15 mph becoming west northwest 20 to 25 mph after midnight. Winds could gust as high as 30 mph.

    Low: 1 °F

    Blustery.
    Slight Chance
    Snow then
    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny and cold, with a high near 8. Blustery.

    High: 8 °F

    Cold and
    Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around 2.

    Low: 2 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of flurries. Mostly cloudy, with a low around 14. Wind chill values as low as -1. West wind around 15 mph, with gusts as high as 25 mph.
Saturday
A slight chance of flurries before noon, then snow, mainly after 3pm. High near 19. Wind chill values as low as -2. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Saturday Night
Snow likely, mainly before 9pm, then a slight chance of flurries after 10pm. Mostly cloudy, with a low around 8. Wind chill values as low as -6. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Sunday
Snow likely after noon. Increasing clouds, with a high near 20. Wind chill values as low as -7. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 1. Blustery, with a southwest wind 10 to 15 mph becoming west northwest 20 to 25 mph after midnight. Winds could gust as high as 30 mph.
M.L.King Day
Mostly sunny and cold, with a high near 8. Blustery.
Monday Night
Partly cloudy, with a low around 2.
Tuesday
Mostly sunny, with a high near 25.
Tuesday Night
Mostly cloudy, with a low around 18.
Wednesday
Mostly cloudy, with a high near 30.
Wednesday Night
Mostly cloudy, with a low around 11.
Thursday
Mostly sunny, with a high near 20.
Thursday Night
Partly cloudy, with a low around 8.
Friday
Partly sunny, with a high near 23.
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ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.13°W
Last Update:
2:36 am CST Jan 17, 2026
Forecast Valid:
2am CST Jan 17, 2026-6pm CST Jan 23, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation