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.

Mostly Cloudy

74°F

23°C

Humidity 97%
Wind Speed Calm
Barometer 30.01 in (1015.9 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 17 Aug 3:56 am CDT
Extended Forecast for

Ewing IL

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms. Cloudy, with a low around 72. Light northwest wind.

    Low: 72 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 86. Northwest wind 6 to 11 mph.

    High: 86 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65. North northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 88. Calm wind.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly clear, with a low around 69. Light and variable wind. Chance of precipitation is 40%.

    Low: 69 °F

    Mostly Clear
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 89. Calm wind becoming south southwest around 6 mph in the morning. Chance of precipitation is 70%.

    High: 89 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Light north northeast wind. Chance of precipitation is 70%.

    Low: 68 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. Northeast wind 3 to 7 mph.

    High: 84 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 64. North northeast wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Chance
    Showers

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms. Cloudy, with a low around 72. Light northwest wind.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 86. Northwest wind 6 to 11 mph.
Monday Night
Partly cloudy, with a low around 65. North northwest wind 5 to 7 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 88. Calm wind.
Tuesday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly clear, with a low around 69. Light and variable wind. Chance of precipitation is 40%.
Wednesday
Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 89. Calm wind becoming south southwest around 6 mph in the morning. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Light north northeast wind. Chance of precipitation is 70%.
Thursday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. Northeast wind 3 to 7 mph.
Thursday Night
A chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 64. North northeast wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 84. Calm wind becoming north 5 to 7 mph in the afternoon.
Friday Night
Mostly clear, with a low around 63. Light north wind.
Saturday
Sunny, with a high near 86. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 64. Light north northwest wind.
Sunday
Sunny, with a high near 85. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ewing IL
 38.09°N 88.84°W
Last Update:
4:11 am CDT Aug 17, 2026
Forecast Valid:
4am CDT Aug 17, 2026-6pm CDT Aug 23, 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