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.

Fair

96°F

36°C

Humidity 41%
Wind Speed SW 7 mph
Barometer 30.18 in (1021.7 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 17 Sep 2:56 pm CDT
Extended Forecast for

Ina IL

Heat Advisory September 17, 03:09pm until September 20, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 17, 03:09pm until September 20, 07:00pm

    NOW until 7:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 100 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: A 10 percent chance of showers and thunderstorms after 5pm. Sunny and hot, with a high near 98. Calm wind.

    High: 98 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 72. Light and variable wind.

    Low: 72 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 98. Light and variable wind becoming west southwest 5 to 9 mph in the morning.

    High: 98 °F

    Hot

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 73. Calm wind becoming south southwest around 5 mph after midnight.

    Low: 73 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 97. West northwest wind 3 to 7 mph.

    High: 97 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70. East northeast wind 3 to 5 mph.

    Low: 70 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 100. Heat index values as high as 106. West southwest wind around 6 mph.
Tonight
Mostly clear, with a low around 73. Calm wind.
Friday
A 10 percent chance of showers and thunderstorms after 5pm. Sunny and hot, with a high near 98. Calm wind.
Friday Night
A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 72. Light and variable wind.
Saturday
Sunny and hot, with a high near 98. Light and variable wind becoming west southwest 5 to 9 mph in the morning.
Saturday Night
Partly cloudy, with a low around 73. Calm wind becoming south southwest around 5 mph after midnight.
Sunday
Mostly sunny and hot, with a high near 97. West northwest wind 3 to 7 mph.
Sunday Night
Partly cloudy, with a low around 70. East northeast wind 3 to 5 mph.
Monday
A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. Light northeast wind becoming north 5 to 10 mph in the morning.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. North northeast wind 5 to 11 mph.
Tuesday
Mostly sunny, with a high near 80. North northeast wind 8 to 13 mph.
Tuesday Night
Partly cloudy, with a low around 58. North northeast wind 6 to 13 mph.
Wednesday
Mostly sunny, with a high near 81. North northeast wind 6 to 9 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ina IL
 38.16°N 88.9°W
Last Update:
1:26 pm CDT Sep 17, 2026
Forecast Valid:
3pm CDT Sep 17, 2026-6pm CDT Sep 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