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.

Partly Cloudy

63°F

17°C

Humidity 27%
Wind Speed S 14 mph
Barometer 30.29 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 29 Mar 10:45 am CDT
Extended Forecast for

3 Miles W Buncombe IL

  • Today

    Today: Mostly sunny, with a high near 70. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 70 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 56. South wind 6 to 9 mph.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 79. Breezy, with a south southwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 79 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 64. South wind 10 to 13 mph, with gusts as high as 24 mph.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. Breezy, with a south southwest wind 11 to 21 mph, with gusts as high as 34 mph.

    High: 83 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 57. Southwest wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

    Low: 57 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 70. West northwest wind 7 to 11 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

    High: 70 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 55. Northeast wind around 8 mph becoming east southeast after midnight.

    Low: 55 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 69. South southeast wind 7 to 9 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.

    High: 69 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 70. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Tonight
Partly cloudy, with a low around 56. South wind 6 to 9 mph.
Monday
Mostly sunny, with a high near 79. Breezy, with a south southwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Mostly clear, with a low around 64. South wind 10 to 13 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 83. Breezy, with a south southwest wind 11 to 21 mph, with gusts as high as 34 mph.
Tuesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 57. Southwest wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Wednesday
Showers and possibly a thunderstorm. High near 70. West northwest wind 7 to 11 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 55. Northeast wind around 8 mph becoming east southeast after midnight.
Thursday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 69. South southeast wind 7 to 9 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
Showers likely. Mostly cloudy, with a low around 53. Southwest wind around 7 mph becoming southeast in the evening.
Friday
A chance of showers. Mostly cloudy, with a high near 76. South wind 6 to 8 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. South wind around 7 mph.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 73. South southwest wind 9 to 13 mph, with gusts as high as 21 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Buncombe IL
 37.47°N 89.02°W
Last Update:
9:16 am CDT Mar 29, 2026
Forecast Valid:
11am CDT Mar 29, 2026-6pm CDT Apr 4, 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