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

64°F

18°C

Humidity 83%
Wind Speed SW 9 mph
Barometer 29.93 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 7 Mar 2:45 pm CST
Extended Forecast for

5 Miles SW Marion IL

  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 63. West southwest wind around 9 mph becoming northwest. Winds could gust as high as 20 mph.

    High: 63 °F

    Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 7pm. Mostly cloudy, with a low around 41. Northwest wind 5 to 9 mph becoming calm after midnight.

    Low: 41 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 66. Calm wind becoming southwest around 6 mph.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 46. South southwest wind 3 to 6 mph.

    Low: 46 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 74. South southwest wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 74 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 62. South southwest wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 62 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 9am. Mostly cloudy, with a high near 79. South southwest wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 79 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Cloudy, with a low around 63. South southwest wind 14 to 17 mph, with gusts as high as 28 mph.

    Low: 63 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. Cloudy, with a high near 73. South southwest wind around 16 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph.

    High: 73 °F

    Showers

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 63. West southwest wind around 9 mph becoming northwest. Winds could gust as high as 20 mph.
Tonight
A 20 percent chance of showers before 7pm. Mostly cloudy, with a low around 41. Northwest wind 5 to 9 mph becoming calm after midnight.
Sunday
Sunny, with a high near 66. Calm wind becoming southwest around 6 mph.
Sunday Night
Clear, with a low around 46. South southwest wind 3 to 6 mph.
Monday
Sunny, with a high near 74. South southwest wind 6 to 14 mph, with gusts as high as 24 mph.
Monday Night
A 20 percent chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 62. South southwest wind 8 to 11 mph, with gusts as high as 21 mph.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 9am. Mostly cloudy, with a high near 79. South southwest wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Cloudy, with a low around 63. South southwest wind 14 to 17 mph, with gusts as high as 28 mph.
Wednesday
Showers and possibly a thunderstorm. Cloudy, with a high near 73. South southwest wind around 16 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph.
Wednesday Night
A chance of showers before midnight. Partly cloudy, with a low around 35. Northwest wind 14 to 16 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 56. Northwest wind 5 to 13 mph, with gusts as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 41. Light southwest wind becoming south 6 to 11 mph in the evening. Winds could gust as high as 21 mph.
Friday
Partly sunny, with a high near 67. Southwest wind 11 to 16 mph, with gusts as high as 28 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Marion IL
 37.67°N 88.98°W
Last Update:
2:07 pm CST Mar 7, 2026
Forecast Valid:
3pm CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation