National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

A Few Clouds

67°F

19°C

Humidity 91%
Wind Speed Calm
Barometer 29.94 in (1013.9 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 21 Jun 12:56 am CDT
Extended Forecast for

5 Miles SW Opdyke IL

Flood Watch June 21, 01:00pm until June 22, 07:00am
Lake Wind Advisory June 21, 12:00pm until June 21, 07:00pm
Click here for hazard details and duration
Flood Watch
Lake Wind Advisory

  • Overnight

    Overnight: Partly cloudy, with a low around 66. Light east wind.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. East southeast wind 5 to 10 mph becoming south southwest 13 to 18 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms. Some of the storms could produce heavy rainfall. Low around 67. South southwest wind 9 to 15 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%.

    Low: 67 °F

    Heavy Rain
    then Showers

  • Monday

    Monday: Showers and thunderstorms likely before 11am, then a slight chance of showers between 11am and noon. Mostly cloudy, with a high near 79. West northwest wind around 10 mph. Chance of precipitation is 60%.

    High: 79 °F

    Showers
    Likely then
    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61. North wind 5 to 8 mph becoming calm in the evening.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 82. Light northeast wind.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Calm wind.

    High: 85 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 66. Light east wind.
Sunday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. East southeast wind 5 to 10 mph becoming south southwest 13 to 18 mph in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
Showers and thunderstorms. Some of the storms could produce heavy rainfall. Low around 67. South southwest wind 9 to 15 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%.
Monday
Showers and thunderstorms likely before 11am, then a slight chance of showers between 11am and noon. Mostly cloudy, with a high near 79. West northwest wind around 10 mph. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 61. North wind 5 to 8 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 82. Light northeast wind.
Tuesday Night
Mostly clear, with a low around 62. Calm wind.
Wednesday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Calm wind.
Wednesday Night
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 65. Calm wind.
Thursday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 64. Light north wind.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Light and variable wind.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Light and variable wind.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. South wind 5 to 10 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Opdyke IL
 38.24°N 88.83°W
Last Update:
1:26 am CDT Jun 21, 2026
Forecast Valid:
1am CDT Jun 21, 2026-6pm CDT Jun 27, 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