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

69°F

21°C

Humidity 67%
Wind Speed S 6 mph
Barometer 29.91 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 2 Apr 12:15 am CDT
Extended Forecast for

2 Miles ENE Herrin IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 67. South wind 10 to 14 mph, with gusts as high as 23 mph.

    Low: 67 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 80. Breezy, with a south wind 16 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 60%.

    High: 80 °F

    Breezy.
    Mostly Cloudy
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly before 8pm, then showers likely and possibly a thunderstorm after 5am. Partly cloudy, with a low around 66. Breezy, with a south southwest wind 11 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely and
    Breezy

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms after 7am. Partly sunny, with a high near 83. South southwest wind 10 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. South wind 11 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    Low: 61 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 71. South southwest wind 11 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 90%.

    High: 71 °F

    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 42. Northwest wind 7 to 10 mph.

    Low: 42 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 61. Northwest wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 39. North northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 39 °F

    Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 67. South wind 10 to 14 mph, with gusts as high as 23 mph.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 80. Breezy, with a south wind 16 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely, mainly before 8pm, then showers likely and possibly a thunderstorm after 5am. Partly cloudy, with a low around 66. Breezy, with a south southwest wind 11 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms after 7am. Partly sunny, with a high near 83. South southwest wind 10 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. South wind 11 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Saturday
Showers and possibly a thunderstorm. High near 71. South southwest wind 11 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 90%.
Saturday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 42. Northwest wind 7 to 10 mph.
Sunday
Sunny, with a high near 61. Northwest wind 7 to 11 mph, with gusts as high as 18 mph.
Sunday Night
Clear, with a low around 39. North northwest wind 5 to 7 mph becoming calm in the evening.
Monday
Sunny, with a high near 67. Calm wind becoming northwest around 6 mph in the morning.
Monday Night
Partly cloudy, with a low around 43. North wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 61. Northeast wind 6 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 39. East northeast wind around 7 mph.
Wednesday
Mostly sunny, with a high near 68. South southeast wind 6 to 9 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:
10:51 pm CDT Apr 1, 2026
Forecast Valid:
12am CDT Apr 2, 2026-6pm CDT Apr 8, 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