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.

Overcast

78°F

26°C

Humidity 56%
Wind Speed SW 16 G 24 mph
Barometer 29.95 in (1014.0 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 15 Apr 2:56 pm CDT
Extended Forecast for

2 Miles W Nason IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83. South southwest wind around 15 mph, with gusts as high as 23 mph.

    High: 83 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 63. South southwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 63 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 81. West southwest wind 8 to 10 mph. Chance of precipitation is 30%.

    High: 81 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 7pm. Mostly clear, with a low around 58. West southwest wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Light south wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 20 mph.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. South wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    Low: 58 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Mostly cloudy, with a high near 70. Southwest wind 11 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 60%.

    High: 70 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A slight chance of showers before 1am. Partly cloudy, with a low around 41. Northwest wind 6 to 13 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 65. West northwest wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 65 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83. South southwest wind around 15 mph, with gusts as high as 23 mph.
Tonight
A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 63. South southwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 81. West southwest wind 8 to 10 mph. Chance of precipitation is 30%.
Thursday Night
A 30 percent chance of showers before 7pm. Mostly clear, with a low around 58. West southwest wind around 5 mph becoming calm in the evening.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Light south wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. South wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Mostly cloudy, with a high near 70. Southwest wind 11 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 60%.
Saturday Night
A slight chance of showers before 1am. Partly cloudy, with a low around 41. Northwest wind 6 to 13 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 65. West northwest wind 6 to 11 mph, with gusts as high as 20 mph.
Sunday Night
Clear, with a low around 41. Northwest wind around 6 mph becoming southeast after midnight.
Monday
Sunny, with a high near 71. South southeast wind 5 to 8 mph.
Monday Night
Mostly clear, with a low around 50. South wind around 7 mph.
Tuesday
Sunny, with a high near 76. South southwest wind 8 to 14 mph, with gusts as high as 21 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Nason IL
 38.18°N 89.01°W
Last Update:
1:21 pm CDT Apr 15, 2026
Forecast Valid:
3pm CDT Apr 15, 2026-6pm CDT Apr 21, 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