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Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Overcast

69°F

21°C

Humidity 97%
Wind Speed Calm
Barometer 30.11 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 24 Jul 9:35 pm CDT
Extended Forecast for

4 Miles SE Pittsburg IL

Heat Advisory July 26, 11:00am until July 28, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: A chance of showers, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 86. Calm wind becoming south around 6 mph in the morning.

    High: 86 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 93. Calm wind.

    High: 93 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. Light south southwest wind.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny and hot, with a high near 97. Southwest wind 5 to 9 mph.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 79. South southwest wind around 9 mph.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97. Northwest wind 6 to 10 mph.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 74. North wind 5 to 7 mph becoming calm in the evening.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 40%.
Saturday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 86. Calm wind becoming south around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 71. Calm wind.
Sunday
Mostly sunny, with a high near 93. Calm wind.
Sunday Night
Mostly clear, with a low around 74. Light south southwest wind.
Monday
Mostly sunny and hot, with a high near 97. Southwest wind 5 to 9 mph.
Monday Night
Mostly clear, with a low around 79. South southwest wind around 9 mph.
Tuesday
Sunny and hot, with a high near 97. Northwest wind 6 to 10 mph.
Tuesday Night
Mostly clear, with a low around 74. North wind 5 to 7 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 93. Calm wind becoming north northeast 5 to 9 mph in the morning.
Wednesday Night
Mostly clear, with a low around 71. North northeast wind around 6 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 92. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 72. East wind around 5 mph becoming calm in the evening.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming south 5 to 7 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:
8:25 pm CDT Jul 24, 2026
Forecast Valid:
9pm CDT Jul 24, 2026-6pm CDT Jul 31, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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