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

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

34°F

1°C

Humidity 38%
Wind Speed NW 17 G 30 mph
Barometer 30.42 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 22 Feb 4:45 pm CST
Extended Forecast for

Pittsburg IL

  • Tonight

    Tonight: Increasing clouds, with a low around 16. North northwest wind 13 to 15 mph, with gusts as high as 24 mph.

    Low: 16 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 34. North northwest wind 6 to 14 mph, with gusts as high as 22 mph.

    High: 34 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 19. Northwest wind around 5 mph becoming calm.

    Low: 19 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 50. Breezy, with a south southwest wind 8 to 13 mph increasing to 16 to 21 mph in the morning. Winds could gust as high as 33 mph.

    High: 50 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39. West southwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 26 mph.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 57. West southwest wind around 7 mph becoming south southeast in the afternoon.

    High: 57 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 41. Southeast wind 6 to 10 mph becoming west southwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 70%.

    Low: 41 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: A chance of showers, mainly before noon. Partly sunny, with a high near 53. West northwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 53 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 29 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 16. North northwest wind 13 to 15 mph, with gusts as high as 24 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 34. North northwest wind 6 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 19. Northwest wind around 5 mph becoming calm.
Tuesday
Partly sunny, with a high near 50. Breezy, with a south southwest wind 8 to 13 mph increasing to 16 to 21 mph in the morning. Winds could gust as high as 33 mph.
Tuesday Night
Mostly cloudy, with a low around 39. West southwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 26 mph.
Wednesday
Mostly sunny, with a high near 57. West southwest wind around 7 mph becoming south southeast in the afternoon.
Wednesday Night
A chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 41. Southeast wind 6 to 10 mph becoming west southwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 70%.
Thursday
A chance of showers, mainly before noon. Partly sunny, with a high near 53. West northwest wind 8 to 13 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 29. Northwest wind 5 to 7 mph becoming calm in the evening.
Friday
Sunny, with a high near 58. Calm wind becoming south southwest 5 to 8 mph in the morning.
Friday Night
Mostly clear, with a low around 38. South wind around 6 mph.
Saturday
Sunny, with a high near 63. South southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 33. West southwest wind around 10 mph becoming north after midnight. Winds could gust as high as 18 mph.
Sunday
A slight chance of showers. Partly sunny, with a high near 52. Northeast wind 9 to 11 mph, with gusts as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Pittsburg IL
 37.78°N 88.86°W
Last Update:
4:31 pm CST Feb 22, 2026
Forecast Valid:
5pm CST Feb 22, 2026-6pm CST Mar 1, 2026
 
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Additional Resources

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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