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

Critical Fire Weather Threats in the West; Storms in the High Plains; Flash Flood Risk in the Mid-Atlantic

Critical fire weather conditions persist across portions of the Northwest, Northern Rockies and Great Basin. Severe thunderstorms with large hail and a few strong gusts are possible across parts of the northern and central Plains. Heavy rainfall brings a flash flooding risk to the Mid-Atlantic. Heat builds in the Southwest into California this week. Read More >

Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Overcast

78°F

26°C

Humidity 90%
Wind Speed Calm
Barometer 29.99 in (1015.5 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 11 Aug 8:56 pm CDT
Extended Forecast for

4 Miles SE Mount Vernon IL

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 71. Light and variable wind.

    Chance
    T-storms

    Low: 71 °F

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 84. Calm wind becoming east 5 to 7 mph in the morning.

    Chance
    T-storms

    High: 84 °F

  • Wednesday
    Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Northeast wind 3 to 5 mph.

    Slight Chance
    T-storms

    Low: 68 °F

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 86. Calm wind becoming east northeast around 6 mph in the morning.

    Chance
    T-storms

    High: 86 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 66. East northeast wind around 5 mph becoming calm in the evening.

    Partly Cloudy

    Low: 66 °F

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 87. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%.

    Chance
    Showers then
    Chance
    T-storms

    High: 87 °F

  • Friday
    Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 68. Calm wind.

    Mostly Clear
    then Slight
    Chance
    T-storms

    Low: 68 °F

  • Saturday

    Saturday: A chance of showers and thunderstorms. Sunny, with a high near 88. Calm wind becoming east around 5 mph in the afternoon.

    Chance
    T-storms

    High: 88 °F

  • Saturday
    Night

    Saturday Night: A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 68. Calm wind.

    Mostly Clear
    then Slight
    Chance
    T-storms

    Low: 68 °F

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 71. Light and variable wind.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 84. Calm wind becoming east 5 to 7 mph in the morning.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Northeast wind 3 to 5 mph.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 86. Calm wind becoming east northeast around 6 mph in the morning.
Thursday Night
Partly cloudy, with a low around 66. East northeast wind around 5 mph becoming calm in the evening.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 87. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 68. Calm wind.
Saturday
A chance of showers and thunderstorms. Sunny, with a high near 88. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 68. Calm wind.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Calm wind becoming west northwest around 5 mph in the afternoon.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 66. Light northwest wind.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81. North wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 59. North wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 78. North northeast wind 3 to 8 mph.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
4 Miles SE Mount Vernon IL
 38.27°N 88.86°W
Last Update:
9:17 pm CDT Aug 11, 2020
Forecast Valid:
9pm CDT Aug 11, 2020-6pm CDT Aug 18, 2020
 
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