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

51°F

11°C

Humidity 43%
Wind Speed NW 10 G 18 mph
Barometer 30.24 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 6 Apr 6:15 pm CDT
Extended Forecast for

Mendota IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. Northwest wind 10 to 15 mph becoming north northeast after midnight. Winds could gust as high as 25 mph.

    Low: 27 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 44. Northeast wind around 10 mph becoming east southeast in the afternoon.

    High: 44 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of snow showers between 10pm and 1am. Mostly cloudy, with a low around 35. Southeast wind 10 to 15 mph. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    Snow Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 66. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 66 °F

    Partly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 51. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 51 °F

    Chance
    Showers and
    Breezy

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 69. Chance of precipitation is 40%.

    High: 69 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.

    Low: 49 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 61.

    High: 61 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 27. Northwest wind 10 to 15 mph becoming north northeast after midnight. Winds could gust as high as 25 mph.
Tuesday
Mostly sunny, with a high near 44. Northeast wind around 10 mph becoming east southeast in the afternoon.
Tuesday Night
A slight chance of snow showers between 10pm and 1am. Mostly cloudy, with a low around 35. Southeast wind 10 to 15 mph. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 66. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 51. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 69. Chance of precipitation is 40%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.
Friday
A chance of showers. Mostly cloudy, with a high near 61.
Friday Night
Partly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 63.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 52.
Sunday
A chance of showers. Mostly cloudy, with a high near 77. Breezy.
Sunday Night
Showers likely. Mostly cloudy, with a low around 62.
Monday
Showers likely. Mostly cloudy, with a high near 78. Breezy.
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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:
4:01 pm CDT Apr 6, 2026
Forecast Valid:
6pm CDT Apr 6, 2026-6pm CDT Apr 13, 2026
 
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