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.

Fog/Mist

39°F

4°C

Humidity 96%
Wind Speed E 5 mph
Barometer 30.14 in (1021.3 mb)
Dewpoint 38°F (3°C)
Visibility 3.00 mi
Wind Chill35°F (2°C)
Last update 3 Mar 1:56 am CST
Extended Forecast for

Sesser IL

  • Overnight

    Overnight: Showers and possibly a thunderstorm, mainly before 5am, then a chance of showers and thunderstorms after 5am. Patchy fog. Low around 39. Light east wind. Chance of precipitation is 80%.

    Low: 39 °F

    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly before noon, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 65. Light and variable wind becoming south southwest 5 to 8 mph in the morning. Chance of precipitation is 70%.

    High: 65 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 53. East northeast wind around 6 mph becoming southeast after midnight. Chance of precipitation is 80%.

    Low: 53 °F

    Chance
    T-storms then
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 68. Southeast wind 6 to 10 mph becoming east northeast in the morning. Chance of precipitation is 90%.

    High: 68 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 56. South wind 6 to 8 mph. Chance of precipitation is 80%.

    Low: 56 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 70. Southwest wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.

    High: 70 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 58. South wind 5 to 8 mph. Chance of precipitation is 50%.

    Low: 58 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms before noon, then a slight chance of showers. Partly sunny, with a high near 78. South wind 9 to 17 mph, with gusts as high as 24 mph.

    High: 78 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 61. South wind 10 to 13 mph, with gusts as high as 23 mph.

    Low: 61 °F

    Showers
    Likely

Detailed Forecast

Overnight
Showers and possibly a thunderstorm, mainly before 5am, then a chance of showers and thunderstorms after 5am. Patchy fog. Low around 39. Light east wind. Chance of precipitation is 80%.
Tuesday
Showers and thunderstorms likely, mainly before noon, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 65. Light and variable wind becoming south southwest 5 to 8 mph in the morning. Chance of precipitation is 70%.
Tuesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 53. East northeast wind around 6 mph becoming southeast after midnight. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 68. Southeast wind 6 to 10 mph becoming east northeast in the morning. Chance of precipitation is 90%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 56. South wind 6 to 8 mph. Chance of precipitation is 80%.
Thursday
Showers and possibly a thunderstorm. High near 70. Southwest wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.
Thursday Night
A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 58. South wind 5 to 8 mph. Chance of precipitation is 50%.
Friday
A chance of showers and thunderstorms before noon, then a slight chance of showers. Partly sunny, with a high near 78. South wind 9 to 17 mph, with gusts as high as 24 mph.
Friday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 61. South wind 10 to 13 mph, with gusts as high as 23 mph.
Saturday
Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy, with a high near 70. South southwest wind 7 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 46. West northwest wind around 6 mph becoming calm in the evening.
Sunday
A slight chance of showers. Partly sunny, with a high near 65. Calm wind becoming south southwest 5 to 7 mph in the morning.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 51. South southwest wind around 6 mph.
Monday
A slight chance of showers. Sunny, with a high near 72. West southwest wind 6 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sesser IL
 38.09°N 89.04°W
Last Update:
12:26 am CST Mar 3, 2026
Forecast Valid:
2am CST Mar 3, 2026-6pm CDT Mar 9, 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