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

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Overcast

66°F

19°C

Humidity 83%
Wind Speed N 1 mph
Barometer 30.22 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 24 Sep 11:15 pm CDT
Extended Forecast for

3 Miles ESE Pittsburg IL

  • Tonight

    Tonight: Partly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79. East northeast wind 3 to 8 mph.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57. North northeast wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 75. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 75 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 78. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 78 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 80. Calm wind becoming east around 5 mph in the afternoon.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 59. Light east wind.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 58. Calm wind.
Friday
Mostly sunny, with a high near 79. East northeast wind 3 to 8 mph.
Friday Night
Partly cloudy, with a low around 57. North northeast wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 75. Calm wind becoming east northeast around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 57. Calm wind.
Sunday
Partly sunny, with a high near 78. Calm wind becoming northeast around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 54. Calm wind.
Monday
Sunny, with a high near 80. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 59. Light east wind.
Tuesday
Mostly sunny, with a high near 84. Light southeast wind becoming south 5 to 10 mph in the morning.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 67. South southeast wind 6 to 13 mph.
Wednesday
A chance of showers. Partly sunny, with a high near 83. South southwest wind 14 to 16 mph, with gusts as high as 23 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 66. South wind 5 to 9 mph.
Thursday
A chance of showers. Mostly sunny, with a high near 80. South southwest wind 7 to 11 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Pittsburg IL
 37.77°N 88.8°W
Last Update:
10:15 pm CDT Sep 24, 2026
Forecast Valid:
11pm CDT Sep 24, 2026-6pm CDT Oct 1, 2026
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation