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.

Partly Cloudy and Breezy

84°F

29°C

Humidity 50%
Wind Speed S 24 G 30 mph
Barometer 29.74 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 17 Apr 2:15 pm CDT
Extended Forecast for

Mendota IL

Flood Watch April 17, 03:00pm until April 18, 05:00am
Tornado Watch until April 17, 08:00pm
Click here for hazard details and duration
Flood Watch
Tornado Watch
  •  
    Tornado Watch until April 17, 08:00pm

    NOW until 8:00pm Fri

    Tornado Watch

  • This Afternoon

    High: 82 °F

    Severe
    Thunderstorms
    and Breezy

  • Tonight

    Tonight: Showers and thunderstorms before 1am, then showers likely. Some of the storms could be severe and produce heavy rainfall. Low around 41. Breezy, with a south wind 15 to 20 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 41 °F

    Breezy.
    Severe
    Thunderstorms
    then Showers
    Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 50. Breezy, with a west northwest wind around 20 mph, with gusts as high as 30 mph.

    High: 50 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Areas of frost after 3am. Otherwise, mostly clear, with a low around 33. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 33 °F

    Mostly Clear
    then Areas
    Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, mostly sunny, with a high near 51. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 51 °F

    Areas Frost
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear
    then Frost

  • Monday

    Monday: Widespread frost before 8am. Otherwise, sunny, with a high near 57.

    High: 57 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Some of the storms could be severe. Mostly sunny, with a high near 82. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph.
Tonight
Showers and thunderstorms before 1am, then showers likely. Some of the storms could be severe and produce heavy rainfall. Low around 41. Breezy, with a south wind 15 to 20 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Saturday
Mostly sunny, with a high near 50. Breezy, with a west northwest wind around 20 mph, with gusts as high as 30 mph.
Saturday Night
Areas of frost after 3am. Otherwise, mostly clear, with a low around 33. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday
Areas of frost before 8am. Otherwise, mostly sunny, with a high near 51. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 31.
Monday
Widespread frost before 8am. Otherwise, sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendota IL
 41.54°N 89.13°W
Last Update:
1:41 pm CDT Apr 17, 2026
Forecast Valid:
2pm CDT Apr 17, 2026-6pm CDT Apr 23, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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