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

Severe Thunderstorm and Flash Flooding Threats in the South

Organized severe thunderstorms capable of producing mainly large hail and perhaps damaging winds are expected across portions of Louisiana this afternoon with a second round further west tonight. Heavy thunderstorms may lead to flash flooding over portions of the northern Gulf Coast today through Saturday. Several inches of excessive rainfall are possible with Flash Flood Watches in effect. Read More >

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Overcast

61°F

16°C

Humidity 39%
Wind Speed NE 5 mph
Barometer 30.14 in (1020.8 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 13 Apr 3:56 pm CDT
Extended Forecast for

Mount Vernon IL

  • This
    Afternoon

    This Afternoon: Partly sunny, with a high near 63. North northwest wind around 5 mph.

    Partly Sunny

    High: 63 °F

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. Calm wind.

    Mostly Cloudy

    Low: 44 °F

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 60. Light north northwest wind becoming west northwest 5 to 10 mph in the morning.

    Decreasing
    Clouds

    High: 60 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 37. Northwest wind 5 to 8 mph becoming calm after midnight.

    Mostly Clear

    Low: 37 °F

  • Thursday

    Thursday: Areas of frost before 7am. Otherwise, sunny, with a high near 60. Light north northwest wind increasing to 5 to 9 mph in the morning.

    Areas Frost
    then Sunny

    High: 60 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 39. Northwest wind around 6 mph becoming calm in the evening.

    Partly Cloudy

    Low: 39 °F

  • Friday

    Friday: Mostly cloudy, with a high near 61. Light north northeast wind.

    Mostly Cloudy

    High: 61 °F

  • Friday
    Night

    Friday Night: A slight chance of showers after 1am. Mostly cloudy, with a low around 44. Light north northeast wind.

    Mostly Cloudy
    then Slight
    Chance
    Showers

    Low: 44 °F

  • Saturday

    Saturday: A slight chance of showers before 1pm. Mostly cloudy, with a high near 58. North northeast wind 3 to 8 mph.

    Slight Chance
    Showers

    High: 58 °F

Detailed Forecast

This Afternoon
Partly sunny, with a high near 63. North northwest wind around 5 mph.
Tonight
Mostly cloudy, with a low around 44. Calm wind.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 60. Light north northwest wind becoming west northwest 5 to 10 mph in the morning.
Wednesday Night
Mostly clear, with a low around 37. Northwest wind 5 to 8 mph becoming calm after midnight.
Thursday
Areas of frost before 7am. Otherwise, sunny, with a high near 60. Light north northwest wind increasing to 5 to 9 mph in the morning.
Thursday Night
Partly cloudy, with a low around 39. Northwest wind around 6 mph becoming calm in the evening.
Friday
Mostly cloudy, with a high near 61. Light north northeast wind.
Friday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 44. Light north northeast wind.
Saturday
A slight chance of showers before 1pm. Mostly cloudy, with a high near 58. North northeast wind 3 to 8 mph.
Saturday Night
Mostly cloudy, with a low around 42. North wind around 6 mph becoming calm in the evening.
Sunday
A slight chance of showers. Partly sunny, with a high near 61. Light northwest wind becoming west northwest 5 to 10 mph in the morning.
Sunday Night
Partly cloudy, with a low around 41. Northwest wind 5 to 8 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 64. West northwest wind 3 to 8 mph.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
Last Update:
3:43 pm CDT Apr 13, 2021
Forecast Valid:
4pm CDT Apr 13, 2021-6pm CDT Apr 19, 2021
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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