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

47°F

8°C

Humidity 64%
Wind Speed NE 7 mph
Barometer 30.10 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 3 Mar 3:35 pm CST
Extended Forecast for

Mendota IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 46. North northeast wind around 5 mph.

    High: 46 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 34. East northeast wind around 5 mph, with gusts as high as 15 mph.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 50. East wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 50 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before midnight, then showers likely and possibly a thunderstorm between midnight and 3am, then showers likely after 3am. Patchy fog after 9pm. Otherwise, cloudy, with a low around 41. East wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 70%.

    Low: 41 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday

    Thursday: Showers likely, mainly before noon. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 55. Northeast wind around 5 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 70%.

    High: 55 °F

    Showers
    Likely and
    Patchy Fog
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after midnight. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm before noon, then showers likely between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. High near 72. Chance of precipitation is 90%.

    High: 72 °F

    Showers

  • Friday Night

    Friday Night: Showers likely, then showers and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Showers

  • Saturday

    Saturday: A chance of showers before noon. Partly sunny, with a high near 60.

    High: 60 °F

    Chance
    Showers then
    Partly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 46. North northeast wind around 5 mph.
Tonight
Mostly cloudy, with a low around 34. East northeast wind around 5 mph, with gusts as high as 15 mph.
Wednesday
A 30 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 50. East wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday Night
A chance of showers before midnight, then showers likely and possibly a thunderstorm between midnight and 3am, then showers likely after 3am. Patchy fog after 9pm. Otherwise, cloudy, with a low around 41. East wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 70%.
Thursday
Showers likely, mainly before noon. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 55. Northeast wind around 5 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 70%.
Thursday Night
A 30 percent chance of showers after midnight. Mostly cloudy, with a low around 43.
Friday
Showers and possibly a thunderstorm before noon, then showers likely between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. High near 72. Chance of precipitation is 90%.
Friday Night
Showers likely, then showers and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 50.
Saturday
A chance of showers before noon. Partly sunny, with a high near 60.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 62.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 68.
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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:
3:36 pm CST Mar 3, 2026
Forecast Valid:
3pm CST Mar 3, 2026-6pm CDT Mar 9, 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