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

73°F

23°C

Humidity 69%
Wind Speed S 17 mph
Barometer 29.68 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 17 Jun 7:47 am CDT
Extended Forecast for

5 Miles S Marion IL

Wind Advisory June 17, 01:00pm until June 17, 08:00pm
Click here for hazard details and duration
Wind Advisory

  • Today

    Today: Sunny, with a high near 89. Breezy, with a south southwest wind 9 to 14 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 89 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: Showers and thunderstorms likely before 4am, then a slight chance of showers. Increasing clouds, with a low around 73. Breezy, with a southwest wind 18 to 23 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 70%.

    Low: 73 °F

    Chance
    T-storms and
    Breezy then
    Showers
    Likely

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 86. West southwest wind around 7 mph becoming north northwest in the afternoon.

    High: 86 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 64. North wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Chance
    Showers

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 84. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 87. Calm wind becoming south around 6 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. Calm wind becoming south around 5 mph after midnight.

    Low: 68 °F

    Mostly Clear
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 86. South southwest wind 8 to 16 mph, with gusts as high as 28 mph.

    High: 86 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 89. Breezy, with a south southwest wind 9 to 14 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 40 mph.
Tonight
Showers and thunderstorms likely before 4am, then a slight chance of showers. Increasing clouds, with a low around 73. Breezy, with a southwest wind 18 to 23 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 70%.
Thursday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 86. West southwest wind around 7 mph becoming north northwest in the afternoon.
Thursday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 64. North wind around 5 mph becoming calm in the evening.
Juneteenth
Mostly sunny, with a high near 84. Calm wind becoming north northwest around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 63. Calm wind.
Saturday
Mostly sunny, with a high near 87. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. Calm wind becoming south around 5 mph after midnight.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 86. South southwest wind 8 to 16 mph, with gusts as high as 28 mph.
Sunday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 70. Southwest wind 11 to 16 mph, with gusts as high as 24 mph.
Monday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 83. Southwest wind around 11 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65. North wind 5 to 9 mph becoming light north northeast in the evening.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 83. North wind 3 to 6 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Marion IL
 37.65°N 88.95°W
Last Update:
1:46 am CDT Jun 17, 2026
Forecast Valid:
8am CDT Jun 17, 2026-6pm CDT Jun 23, 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