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.

Clear

70°F

21°C

Humidity 38%
Wind Speed SW 10 G 22 mph
Barometer 29.96 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 27 Feb 1:45 pm CST
Extended Forecast for

2 Miles ENE Herrin IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 71. South southwest wind 9 to 13 mph, with gusts as high as 20 mph.

    High: 71 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 42. South wind 5 to 9 mph becoming light and variable after midnight.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 70. Northeast wind 5 to 8 mph becoming south in the afternoon.

    High: 70 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 37. South wind 6 to 10 mph becoming north after midnight.

    Low: 37 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Sunday

    Sunday: Mostly cloudy, with a high near 51. Northeast wind around 10 mph, with gusts as high as 18 mph.

    High: 51 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain showers likely before 9pm, then rain likely, possibly mixed with snow showers between 9pm and 3am, then rain showers likely after 3am. Cloudy, with a low around 35. East northeast wind around 9 mph. Chance of precipitation is 70%.

    Low: 35 °F

    Rain/Snow
    Likely

  • Monday

    Monday: A 50 percent chance of showers, mainly before noon. Cloudy, with a high near 46. East wind 7 to 10 mph.

    High: 46 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers. Cloudy, with a low around 41. East wind around 7 mph becoming south after midnight.

    Low: 41 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy, with a high near 64. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 64 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 71. South southwest wind 9 to 13 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 42. South wind 5 to 9 mph becoming light and variable after midnight.
Saturday
Mostly sunny, with a high near 70. Northeast wind 5 to 8 mph becoming south in the afternoon.
Saturday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 37. South wind 6 to 10 mph becoming north after midnight.
Sunday
Mostly cloudy, with a high near 51. Northeast wind around 10 mph, with gusts as high as 18 mph.
Sunday Night
Rain showers likely before 9pm, then rain likely, possibly mixed with snow showers between 9pm and 3am, then rain showers likely after 3am. Cloudy, with a low around 35. East northeast wind around 9 mph. Chance of precipitation is 70%.
Monday
A 50 percent chance of showers, mainly before noon. Cloudy, with a high near 46. East wind 7 to 10 mph.
Monday Night
A chance of showers. Cloudy, with a low around 41. East wind around 7 mph becoming south after midnight.
Tuesday
Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy, with a high near 64. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
Showers likely, with thunderstorms also possible after midnight. Cloudy, with a low around 53. South southeast wind around 9 mph.
Wednesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 66. South wind 9 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 54. South southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 69. South southwest wind 10 to 14 mph, with gusts as high as 22 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:
12:56 pm CST Feb 27, 2026
Forecast Valid:
2pm CST Feb 27, 2026-6pm CST Mar 5, 2026
 
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Additional Resources

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