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

49°F

9°C

Humidity 88%
Wind Speed N 15 mph
Barometer 30.24 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 10 Apr 10:30 am CDT
Extended Forecast for

Mendota IL

  • Today

    Today: Partly sunny, with a high near 58. North northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 58 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 36. North wind 5 to 10 mph becoming east after midnight.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 59. East southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 59 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am. Mostly cloudy, with a low around 52. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 52 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 74. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%.

    High: 74 °F

    Breezy.
    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Breezy.

    Low: 61 °F

    Chance
    Showers and
    Breezy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78.

    High: 78 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80.

    High: 80 °F

    Mostly Cloudy
    then Showers
    Likely

Detailed Forecast

Today
Partly sunny, with a high near 58. North northwest wind around 10 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 36. North wind 5 to 10 mph becoming east after midnight.
Saturday
A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 59. East southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am. Mostly cloudy, with a low around 52. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Sunday
Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 74. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Breezy.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78.
Monday Night
A chance of showers. Mostly cloudy, with a low around 65.
Tuesday
Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 60.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 73. Breezy.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 53.
Thursday
A chance of showers. Mostly sunny, with a high near 76.
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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:
10:11 am CDT Apr 10, 2026
Forecast Valid:
10am CDT Apr 10, 2026-6pm CDT Apr 16, 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