Areas of Excessive Rainfall and Severe Thunderstorms; Fire Weather Concerns in the Northern Plains and Four Corners Region

Widespread showers and thunderstorms may bring areas of flash flooding across much of the Southern Plains into the Gulf Coast region and the upper Ohio River Valley into the Mid-Atlantic. A large Pacific storm will bring widespread rain, gusty winds, and mountain snow to California and the Great Basin. Fire weather concerns expected in the Northern Plains and the Four Corners region. Read More >

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 98%
Wind Speed S 3 mph
Barometer 29.93 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 27 May 12:55 am CDT
Extended Forecast for

3 Miles ESE Pittsburg IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly between 3pm and 4pm.  Cloudy, then gradually becoming mostly sunny, with a high near 82. Southwest wind 3 to 7 mph.

    High: 82 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before 7pm.  Increasing clouds, with a low around 65. Calm wind.

    Low: 65 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 83. Calm wind becoming east northeast 5 to 9 mph in the morning.

    High: 83 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 1am.  Mostly cloudy, with a low around 65. East northeast wind 5 to 7 mph.

    Low: 65 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm.  Mostly cloudy, with a high near 78. East wind around 8 mph.  Chance of precipitation is 30%.

    High: 78 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms.  Mostly cloudy, with a low around 63. East northeast wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 81. East northeast wind 3 to 8 mph.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 62. East northeast wind around 6 mph.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 65. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly between 3pm and 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 82. Southwest wind 3 to 7 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 7pm. Increasing clouds, with a low around 65. Calm wind.
Thursday
Partly sunny, with a high near 83. Calm wind becoming east northeast 5 to 9 mph in the morning.
Thursday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 65. East northeast wind 5 to 7 mph.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78. East wind around 8 mph. Chance of precipitation is 30%.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 63. East northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Saturday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81. East northeast wind 3 to 8 mph.
Saturday Night
Partly cloudy, with a low around 62. East northeast wind around 6 mph.
Sunday
Mostly sunny, with a high near 80. East northeast wind 7 to 9 mph.
Sunday Night
Partly cloudy, with a low around 60. East northeast wind 5 to 7 mph becoming calm in the evening.
Monday
Sunny, with a high near 81. Light northeast wind increasing to 5 to 10 mph in the morning.
Monday Night
Mostly clear, with a low around 59. Northeast wind 3 to 8 mph.
Tuesday
Sunny, with a high near 81. East northeast wind 5 to 11 mph.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Pittsburg IL
 37.77°N 88.8°W
12:16 am CDT May 27, 2026
1am CDT May 27, 2026-6pm CDT Jun 2, 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