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

43°F

6°C

Humidity 60%
Wind Speed NE 16 G 24 mph
Barometer 30.28 in (1026.1 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 1 Mar 4:56 pm CST
Extended Forecast for

9 Miles WSW Johnsonville IL

  • Tonight

    Tonight: Rain, possibly mixed with snow before 3am, then rain, possibly mixed with snow and sleet between 3am and 4am, then rain after 4am. Low around 34. Northeast wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. Little or no snow and sleet accumulation expected.

    Low: 34 °F

    Rain Likely
    then Wintry
    Mix

  • Monday

    Monday: Rain likely, mainly before 11am, then a slight chance of drizzle after 4pm. Cloudy, with a high near 43. East wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 43 °F

    Rain Likely
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: A 50 percent chance of showers after midnight. Cloudy, with a steady temperature around 42. Calm wind becoming east southeast around 5 mph after midnight.

    Low: 42 °F

    Cloudy then
    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely, mainly before noon. Cloudy, with a high near 67. East southeast wind 6 to 11 mph becoming south southwest in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 70%.

    High: 67 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 55. South wind around 6 mph.

    Low: 55 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 71. South southwest wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 71 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 56. South southwest wind around 8 mph. Chance of precipitation is 70%.

    Low: 56 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers. Mostly cloudy, with a high near 70. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 70 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. South wind 7 to 9 mph, with gusts as high as 18 mph.

    Low: 58 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Tonight
Rain, possibly mixed with snow before 3am, then rain, possibly mixed with snow and sleet between 3am and 4am, then rain after 4am. Low around 34. Northeast wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. Little or no snow and sleet accumulation expected.
Monday
Rain likely, mainly before 11am, then a slight chance of drizzle after 4pm. Cloudy, with a high near 43. East wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Monday Night
A 50 percent chance of showers after midnight. Cloudy, with a steady temperature around 42. Calm wind becoming east southeast around 5 mph after midnight.
Tuesday
Showers likely, mainly before noon. Cloudy, with a high near 67. East southeast wind 6 to 11 mph becoming south southwest in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 70%.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 55. South wind around 6 mph.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 71. South southwest wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 56. South southwest wind around 8 mph. Chance of precipitation is 70%.
Thursday
Showers. Mostly cloudy, with a high near 70. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. South wind 7 to 9 mph, with gusts as high as 18 mph.
Friday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 76. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 52. South southwest wind around 9 mph, with gusts as high as 18 mph.
Saturday
Showers and thunderstorms likely. Cloudy, with a high near 64. Southwest wind 6 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
A chance of showers. Partly cloudy, with a low around 43. Northwest wind around 5 mph becoming south after midnight.
Sunday
A chance of showers. Mostly sunny, with a high near 66. South southwest wind 5 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles WSW Johnsonville IL
 38.48°N 88.68°W
Last Update:
4:16 pm CST Mar 1, 2026
Forecast Valid:
5pm CST Mar 1, 2026-6pm CDT Mar 8, 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