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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Buncombe IL

  • Overnight

    Overnight: Clear, with a low around 35. Calm wind.

    Low: 35 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 62. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: A slight chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and 2am, then showers likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 49. Southeast wind 6 to 8 mph. Chance of precipitation is 70%.

    Low: 49 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 72. Southwest wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    High: 72 °F

    Showers
    Likely then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers before midnight. Partly cloudy, with a low around 51. Southwest wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 65. Light northwest wind.

    High: 65 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A slight chance of showers, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 51. Calm wind. Chance of precipitation is 50%.

    Low: 51 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. Cloudy, with a high near 67. Calm wind becoming south 5 to 8 mph in the morning.

    High: 67 °F

    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Cloudy, with a low around 57. South wind 5 to 7 mph.

    Low: 57 °F

    Showers

Detailed Forecast

Overnight
Clear, with a low around 35. Calm wind.
Monday
Sunny, with a high near 62. Calm wind becoming southeast 5 to 7 mph in the morning.
Monday Night
A slight chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and 2am, then showers likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 49. Southeast wind 6 to 8 mph. Chance of precipitation is 70%.
Tuesday
Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 72. Southwest wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Tuesday Night
A 30 percent chance of showers before midnight. Partly cloudy, with a low around 51. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Mostly cloudy, with a high near 65. Light northwest wind.
Wednesday Night
A slight chance of showers, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 51. Calm wind. Chance of precipitation is 50%.
Thursday
Showers and possibly a thunderstorm. Cloudy, with a high near 67. Calm wind becoming south 5 to 8 mph in the morning.
Thursday Night
Showers and possibly a thunderstorm. Cloudy, with a low around 57. South wind 5 to 7 mph.
Friday
Showers likely, mainly before noon. Mostly cloudy, with a high near 68. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Southwest wind around 6 mph becoming west northwest after midnight.
Saturday
Partly sunny, with a high near 58. Northwest wind 3 to 7 mph.
Saturday Night
Mostly cloudy, with a low around 42. Calm wind.
Sunday
A slight chance of showers. Mostly sunny, with a high near 58. Calm wind becoming west northwest around 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Buncombe IL
 37.47°N 88.96°W
Last Update:
3:16 am CST Nov 17, 2025
Forecast Valid:
3am CST Nov 17, 2025-6pm CST Nov 23, 2025
 
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