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.

Fair

69°F

21°C

Humidity 84%
Wind Speed Calm
Barometer 30.09 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 30 Aug 1:35 am CDT
Extended Forecast for

4 Miles SE Pittsburg IL

  • Overnight

    Overnight: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 94. Light south southeast wind becoming south southwest 5 to 10 mph in the morning.

    High: 94 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. Calm wind becoming south around 5 mph after midnight.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 96. South southwest wind 5 to 10 mph.

    High: 96 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 74. South wind 3 to 5 mph.

    Low: 74 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97. Southwest wind 3 to 7 mph.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 75. South wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 98. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 98 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. South wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 68. Calm wind.
Sunday
Sunny, with a high near 94. Light south southeast wind becoming south southwest 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 73. Calm wind becoming south around 5 mph after midnight.
Monday
Sunny, with a high near 96. South southwest wind 5 to 10 mph.
Monday Night
Clear, with a low around 74. South wind 3 to 5 mph.
Tuesday
Sunny and hot, with a high near 97. Southwest wind 3 to 7 mph.
Tuesday Night
Clear, with a low around 75. South wind around 5 mph becoming calm in the evening.
Wednesday
Sunny and hot, with a high near 98. Calm wind becoming southwest 5 to 8 mph in the morning.
Wednesday Night
Mostly clear, with a low around 75. South wind around 5 mph becoming calm in the evening.
Thursday
Sunny and hot, with a high near 98. South southwest wind 3 to 8 mph.
Thursday Night
Mostly clear, with a low around 75. Light south southwest wind.
Friday
A slight chance of showers and thunderstorms. Mostly sunny and hot, with a high near 98. Calm wind becoming southwest around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 74. Calm wind.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 96. Calm wind becoming northwest 5 to 8 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Pittsburg IL
 37.73°N 88.81°W
Last Update:
1:26 am CDT Aug 30, 2026
Forecast Valid:
1am CDT Aug 30, 2026-6pm CDT Sep 5, 2026
 
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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