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.

Fair

74°F

23°C

Humidity 98%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 8 Aug 3:35 am CDT
Extended Forecast for

2 Miles NW Marion IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 93. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 93 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 71. Calm wind.

    Low: 71 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, sunny, with a high near 94. Light south wind increasing to 5 to 10 mph in the morning.

    High: 94 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. South wind 5 to 8 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 96. South southwest wind 6 to 11 mph.

    High: 96 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. South southwest wind 8 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97. Southwest wind 8 to 13 mph.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 75. South southwest wind 8 to 11 mph.

    Low: 75 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 72. Calm wind.
Saturday
Partly sunny, with a high near 93. Calm wind becoming southwest around 6 mph in the afternoon.
Saturday Night
Patchy fog after 4am. Otherwise, mostly clear, with a low around 71. Calm wind.
Sunday
Patchy fog before 8am. Otherwise, sunny, with a high near 94. Light south wind increasing to 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 73. South wind 5 to 8 mph.
Monday
Sunny, with a high near 96. South southwest wind 6 to 11 mph.
Monday Night
Mostly clear, with a low around 75. South southwest wind 8 to 10 mph.
Tuesday
Sunny and hot, with a high near 97. Southwest wind 8 to 13 mph.
Tuesday Night
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 75. South southwest wind 8 to 11 mph.
Wednesday
A chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 95. Southwest wind 8 to 10 mph.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Southwest wind 7 to 11 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 91. Southwest wind 5 to 9 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Northwest wind around 6 mph becoming southeast in the evening.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. South southwest wind 5 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Marion IL
 37.76°N 88.97°W
Last Update:
1:46 am CDT Aug 8, 2026
Forecast Valid:
3am CDT Aug 8, 2026-6pm CDT Aug 14, 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