Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

77°F

25°C

Humidity 66%
Wind Speed E 3 mph
Barometer 30.01 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 12 Jun 8:15 pm CDT
Extended Forecast for

Marion IL

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after midnight.  Increasing clouds, with a low around 69. Calm wind.

    Low: 69 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Friday

    Friday: Showers and thunderstorms likely before 2pm, then showers and possibly a thunderstorm between 2pm and 3pm, then showers and thunderstorms likely after 3pm.  High near 82. Light south southeast wind becoming south 5 to 9 mph in the morning.  Chance of precipitation is 80%.

    High: 82 °F

    Showers
    Likely then
    T-storms

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 70. South wind 3 to 6 mph.  Chance of precipitation is 60%.

    Low: 70 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm.  High near 81. Southwest wind 3 to 6 mph.  Chance of precipitation is 80%.

    High: 81 °F

    Chance
    Showers then
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers.  Mostly cloudy, with a low around 70. Light and variable wind.  Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 10am.  Partly sunny, with a high near 85. Calm wind becoming northwest around 5 mph.  Chance of precipitation is 40%.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms.  Partly cloudy, with a low around 70. Calm wind.  Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 86. Calm wind becoming southwest around 5 mph.

    High: 86 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 71. Light southwest wind.

    Low: 71 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms, mainly after midnight. Increasing clouds, with a low around 69. Calm wind.
Friday
Showers and thunderstorms likely before 2pm, then showers and possibly a thunderstorm between 2pm and 3pm, then showers and thunderstorms likely after 3pm. High near 82. Light south southeast wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 80%.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. South wind 3 to 6 mph. Chance of precipitation is 60%.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 81. Southwest wind 3 to 6 mph. Chance of precipitation is 80%.
Saturday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 70. Light and variable wind. Chance of precipitation is 30%.
Sunday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 85. Calm wind becoming northwest around 5 mph. Chance of precipitation is 40%.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 70. Calm wind. Chance of precipitation is 20%.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. Calm wind becoming southwest around 5 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Light southwest wind.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. South southwest wind 5 to 8 mph.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. South wind around 6 mph.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Southwest wind 7 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 75. South southwest wind 6 to 8 mph.
Juneteenth
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. West southwest wind 6 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.73°N 88.92°W
7:31 pm CDT Jun 12, 2025
8pm CDT Jun 12, 2025-6pm CDT Jun 19, 2025
 
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Additional Resources

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