National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

47°F

8°C

Humidity 90%
Wind Speed S 9 mph
Barometer 29.97 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 9 Mar 1:35 am CDT
Extended Forecast for

2 Miles N Herrin IL

  • Overnight

    Overnight: Clear, with a low around 47. South wind around 7 mph.

    Low: 47 °F

    Clear

  • Monday

    Monday: Partly sunny, with a high near 73. South southwest wind 8 to 16 mph, with gusts as high as 25 mph.

    High: 73 °F

    Partly Sunny

  • Monday Night

    Monday Night: 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 16 to 21 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 southwest in the afternoon.

    High: 55 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 43. South wind 7 to 15 mph, with gusts as high as 25 mph.

    Low: 43 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 47. South wind around 7 mph.
Monday
Partly sunny, with a high near 73. South southwest wind 8 to 16 mph, with gusts as high as 25 mph.
Monday Night
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 16 to 21 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 southwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 43. South wind 7 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 51. South wind 10 to 13 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 28 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Herrin IL
 37.83°N 89.03°W
Last Update:
1:26 am CDT Mar 9, 2026
Forecast Valid:
1am CDT Mar 9, 2026-6pm CDT Mar 15, 2026
 
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Additional Resources

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Chance of Precipitation