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.

Fair

42°F

6°C

Humidity 59%
Wind Speed SW 8 mph
Barometer 30.11 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 18 Apr 11:55 pm CDT
Extended Forecast for

Mendota IL

Freeze Watch April 20, 12:00am until April 20, 09:00am
Frost Advisory until April 19, 09:00am
Click here for hazard details and duration
Freeze Watch
Frost Advisory
  •  
    Frost Advisory until April 19, 09:00am

    NOW until 9:00am Sun

    Frost Advisory

  • Overnight

    Low: 33 °F

    Areas Frost

  • Sunday

    Sunday: A 20 percent chance of showers after 1pm. Areas of frost before 8am. Otherwise, increasing clouds, with a high near 51. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 51 °F

    Areas Frost
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: Widespread frost after 2am. Otherwise, mostly clear, with a low around 29. North northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 29 °F

    Mostly Clear
    then Frost

  • Monday

    Monday: Widespread frost before 8am. Otherwise, sunny, with a high near 55. North northeast wind around 5 mph becoming south in the afternoon. Winds could gust as high as 15 mph.

    High: 55 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

Overnight
Areas of frost after 2am. Otherwise, clear, with a low around 33. West southwest wind around 5 mph.
Sunday
A 20 percent chance of showers after 1pm. Areas of frost before 8am. Otherwise, increasing clouds, with a high near 51. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Widespread frost after 2am. Otherwise, mostly clear, with a low around 29. North northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Monday
Widespread frost before 8am. Otherwise, sunny, with a high near 55. North northeast wind around 5 mph becoming south in the afternoon. Winds could gust as high as 15 mph.
Monday Night
Partly cloudy, with a low around 44. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 55.
Thursday
Mostly sunny, with a high near 81. Breezy.
Thursday Night
Showers likely. Mostly cloudy, with a low around 60.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 69.
Friday Night
A chance of showers. Mostly cloudy, with a low around 43.
Saturday
Mostly sunny, with a high near 62.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.13°W
Last Update:
9:30 pm CDT Apr 18, 2026
Forecast Valid:
12am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation