Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

55°F

13°C

Humidity 28%
Wind Speed W 14 G 21 mph
Barometer 29.62 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 20 Feb 1:35 am CST
Extended Forecast for

4 Miles S Frankfort Heights IL

  • Overnight

    Overnight: Mostly clear, with a low around 37. West wind 13 to 15 mph, with gusts as high as 26 mph.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 48. West wind 6 to 16 mph, with gusts as high as 24 mph.

    High: 48 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after midnight.  Mostly clear during the early evening, then becoming mostly cloudy, with a low around 32. Calm wind becoming north around 5 mph after midnight.

    Low: 32 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 45. Northwest wind 5 to 10 mph.

    High: 45 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 38. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 29 mph.

    High: 38 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 18. Northwest wind 11 to 14 mph, with gusts as high as 22 mph.

    Low: 18 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 36. North northwest wind 7 to 14 mph, with gusts as high as 21 mph.

    High: 36 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 18. North northwest wind around 5 mph becoming calm  in the evening.

    Low: 18 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 37. West wind 13 to 15 mph, with gusts as high as 26 mph.
Friday
Sunny, with a high near 48. West wind 6 to 16 mph, with gusts as high as 24 mph.
Friday Night
A 20 percent chance of showers after midnight. Mostly clear during the early evening, then becoming mostly cloudy, with a low around 32. Calm wind becoming north around 5 mph after midnight.
Saturday
Mostly sunny, with a high near 45. Northwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 24. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 38. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 29 mph.
Sunday Night
Mostly clear, with a low around 18. Northwest wind 11 to 14 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 36. North northwest wind 7 to 14 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 18. North northwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 46. Light south southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 38. South southwest wind around 14 mph, with gusts as high as 24 mph.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 57. Southwest wind 10 to 15 mph, with gusts as high as 24 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 36. Southwest wind 6 to 9 mph becoming north northwest after midnight.
Thursday
A slight chance of showers. Mostly sunny, with a high near 55. North northwest wind 6 to 9 mph becoming east northeast in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Frankfort Heights IL
 37.84°N 88.86°W
1:12 am CST Feb 20, 2026
1am CST Feb 20, 2026-6pm CST Feb 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

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