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

46°F

8°C

Humidity 51%
Wind Speed S 12 G 18 mph
Barometer 30.10 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 12 Mar 9:15 pm CDT
Extended Forecast for

2 Miles ENE Herrin IL

  • Tonight

    Tonight: Partly cloudy, with a low around 43. Breezy, with a south wind 10 to 20 mph, with gusts as high as 34 mph.

    Low: 43 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Mostly sunny, with a high near 64. Southwest wind 11 to 18 mph, with gusts as high as 34 mph.

    High: 64 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38. Northwest wind around 6 mph becoming calm in the evening.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 68. East wind 6 to 10 mph becoming south southeast in the afternoon.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 55. Southeast wind 7 to 13 mph, with gusts as high as 22 mph.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72. Breezy, with a south wind 15 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 70%.

    High: 72 °F

    Breezy.
    Mostly Cloudy
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before 1am, then a chance of rain and snow showers. Some thunder is also possible. Low around 26. Breezy, with a south southwest wind around 25 mph becoming west northwest after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 80%.

    Low: 26 °F

    Breezy.
    Showers then
    Rain/Snow

  • Monday

    Monday: Mostly cloudy, with a high near 34. Breezy, with a west northwest wind 21 to 23 mph, with gusts as high as 33 mph.

    High: 34 °F

    Mostly Cloudy
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 15. Northwest wind 8 to 17 mph, with gusts as high as 22 mph.

    Low: 15 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 43. Breezy, with a south wind 10 to 20 mph, with gusts as high as 34 mph.
Friday
Mostly sunny, with a high near 64. Southwest wind 11 to 18 mph, with gusts as high as 34 mph.
Friday Night
Partly cloudy, with a low around 38. Northwest wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 68. East wind 6 to 10 mph becoming south southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 55. Southeast wind 7 to 13 mph, with gusts as high as 22 mph.
Sunday
Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72. Breezy, with a south wind 15 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 70%.
Sunday Night
Rain showers before 1am, then a chance of rain and snow showers. Some thunder is also possible. Low around 26. Breezy, with a south southwest wind around 25 mph becoming west northwest after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 80%.
Monday
Mostly cloudy, with a high near 34. Breezy, with a west northwest wind 21 to 23 mph, with gusts as high as 33 mph.
Monday Night
Mostly clear, with a low around 15. Northwest wind 8 to 17 mph, with gusts as high as 22 mph.
Tuesday
Mostly sunny, with a high near 38. West wind 6 to 9 mph.
Tuesday Night
A slight chance of rain and snow showers. Mostly cloudy, with a low around 27. South southeast wind around 8 mph.
Wednesday
Partly sunny, with a high near 56. South southwest wind 9 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 40. South southwest wind around 7 mph.
Thursday
Mostly sunny, with a high near 67. South southwest wind 6 to 10 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:
5:51 pm CDT Mar 12, 2026
Forecast Valid:
9pm CDT Mar 12, 2026-6pm CDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation