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.

Fog/Mist

55°F

13°C

Humidity 100%
Wind Speed S 9 mph
Barometer 29.99 in
Dewpoint 55°F (13°C)
Visibility 5.00 mi
Wind Chill53°F (12°C)
Last update 9 Mar 9:45 am CDT
Extended Forecast for

2 Miles ENE Herrin IL

  • Today

    Today: Mostly cloudy, with a high near 74. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 74 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 62. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.

    Low: 62 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Patchy fog between 8am and 10am. Otherwise, partly sunny, with a high near 79. South southwest wind 8 to 15 mph, with gusts as high as 23 mph.

    High: 79 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 65. South southwest wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.

    Low: 65 °F

    Chance
    T-storms then
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 72. South southwest wind 16 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 100%.

    High: 72 °F

    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 35. Breezy, with a north northwest wind 17 to 22 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 29 mph.

    Low: 35 °F

    Slight Chance
    Showers and
    Breezy

  • Thursday

    Thursday: Sunny, with a high near 55. North northwest wind around 7 mph becoming west southwest in the afternoon.

    High: 55 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 43. South wind 6 to 15 mph, with gusts as high as 25 mph.

    Low: 43 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 66. Southwest wind 11 to 15 mph, with gusts as high as 24 mph.

    High: 66 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 74. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, with a low around 62. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Patchy fog between 8am and 10am. Otherwise, partly sunny, with a high near 79. South southwest wind 8 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 65. South southwest wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 72. South southwest wind 16 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 100%.
Wednesday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 35. Breezy, with a north northwest wind 17 to 22 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 29 mph.
Thursday
Sunny, with a high near 55. North northwest wind around 7 mph becoming west southwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 43. South wind 6 to 15 mph, with gusts as high as 25 mph.
Friday
Partly sunny, with a high near 66. Southwest wind 11 to 15 mph, with gusts as high as 24 mph.
Friday Night
Partly cloudy, with a low around 40. Northwest wind around 6 mph becoming east after midnight.
Saturday
Sunny, with a high near 68. East wind 6 to 13 mph becoming south in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 52. South wind 10 to 14 mph, with gusts as high as 23 mph.
Sunday
A chance of showers. Mostly cloudy, with a high near 71. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 29 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Herrin IL
 37.8°N 89°W
Last Update:
8:16 am CDT Mar 9, 2026
Forecast Valid:
9am CDT Mar 9, 2026-6pm CDT Mar 15, 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