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

57°F

14°C

Humidity 52%
Wind Speed SE 7 mph
Barometer 29.84 in
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 14 Mar 10:35 pm CDT
Extended Forecast for

2 Miles ENE Herrin IL

Wind Advisory March 15, 10:00am until March 16, 07:00am
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: Partly cloudy, with a steady temperature around 59. South wind 6 to 14 mph, with gusts as high as 22 mph.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 71. Breezy, with a south wind 18 to 23 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 43 mph. Chance of precipitation is 60%.

    High: 71 °F

    Breezy.
    Mostly Cloudy
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before 10pm, then rain, possibly mixed with snow showers between 10pm and 1am, then a slight chance of snow showers after 1am. Some thunder is also possible. Low around 26. Breezy, with a west wind 22 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 26 °F

    Rain/Snow and
    Breezy

  • Monday

    Monday: Mostly cloudy, with a high near 34. Breezy, with a west northwest wind around 22 mph, with gusts as high as 37 mph.

    High: 34 °F

    Mostly Cloudy
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 16. West northwest wind 8 to 18 mph, with gusts as high as 25 mph.

    Low: 16 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 40. Northwest wind around 7 mph becoming west southwest in the afternoon.

    High: 40 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow showers after 1am. Mostly cloudy, with a low around 31. South wind 5 to 14 mph, with gusts as high as 22 mph.

    Low: 31 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 62. South wind 13 to 16 mph, with gusts as high as 25 mph.

    High: 62 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 42. South southwest wind 5 to 8 mph.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a steady temperature around 59. South wind 6 to 14 mph, with gusts as high as 22 mph.
Sunday
A chance of showers before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 71. Breezy, with a south wind 18 to 23 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 43 mph. Chance of precipitation is 60%.
Sunday Night
Rain showers before 10pm, then rain, possibly mixed with snow showers between 10pm and 1am, then a slight chance of snow showers after 1am. Some thunder is also possible. Low around 26. Breezy, with a west wind 22 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Monday
Mostly cloudy, with a high near 34. Breezy, with a west northwest wind around 22 mph, with gusts as high as 37 mph.
Monday Night
Mostly clear, with a low around 16. West northwest wind 8 to 18 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 40. Northwest wind around 7 mph becoming west southwest in the afternoon.
Tuesday Night
A 20 percent chance of snow showers after 1am. Mostly cloudy, with a low around 31. South wind 5 to 14 mph, with gusts as high as 22 mph.
Wednesday
Mostly sunny, with a high near 62. South wind 13 to 16 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 42. South southwest wind 5 to 8 mph.
Thursday
Sunny, with a high near 71. Southwest wind 5 to 7 mph.
Thursday Night
Partly cloudy, with a low around 48. South wind around 5 mph.
Friday
Sunny, with a high near 74. South southwest wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around 49. West southwest wind around 6 mph.
Saturday
Mostly sunny, with a high near 78. West northwest wind 7 to 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Herrin IL
 37.8°N 89°W
Last Update:
9:06 pm CDT Mar 14, 2026
Forecast Valid:
10pm CDT Mar 14, 2026-6pm CDT Mar 21, 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