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

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Mostly Cloudy

58°F

14°C

Humidity 51%
Wind Speed W 9 mph
Barometer 30.20 in (1023.0 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 16 Oct 2:56 pm CDT
Extended Forecast for

2 Miles WNW Opdyke IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers after 4pm. Mostly cloudy, with a high near 55. Breezy, with a northwest wind around 21 mph, with gusts as high as 25 mph.

    High: 55 °F

    Slight Chance
    Showers and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 39. North wind 11 to 15 mph, with gusts as high as 21 mph.

    Low: 39 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 61. North northeast wind 7 to 10 mph.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 4am. Otherwise, clear, with a low around 33. Calm wind.

    Low: 33 °F

    Clear then
    Areas Frost

  • Sunday

    Sunday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 66. Calm wind becoming southeast around 6 mph in the morning.

    High: 66 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 37. Calm wind.

    Low: 37 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 71. Light east wind.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74. Calm wind becoming east around 5 mph in the afternoon.

    High: 74 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers after 4pm. Mostly cloudy, with a high near 55. Breezy, with a northwest wind around 21 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 39. North wind 11 to 15 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 61. North northeast wind 7 to 10 mph.
Saturday Night
Areas of frost after 4am. Otherwise, clear, with a low around 33. Calm wind.
Sunday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 66. Calm wind becoming southeast around 6 mph in the morning.
Sunday Night
Clear, with a low around 37. Calm wind.
Monday
Sunny, with a high near 71. Light east wind.
Monday Night
Mostly clear, with a low around 40. Calm wind.
Tuesday
Sunny, with a high near 74. Calm wind becoming east around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 42. Calm wind.
Wednesday
Sunny, with a high near 77. Light east wind.
Wednesday Night
Clear, with a low around 44. Calm wind.
Thursday
Sunny, with a high near 79. Light and variable wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Opdyke IL
 38.28°N 88.77°W
Last Update:
1:46 pm CDT Oct 16, 2026
Forecast Valid:
3pm CDT Oct 16, 2026-6pm CDT Oct 22, 2026
 
Forecast Discussion
 
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Additional Resources

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