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

77°F

25°C

Humidity 49%
Wind Speed S 6 mph
Barometer 29.93 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 May 8:55 pm CDT
Extended Forecast for

West Frankfort IL

  • Tonight

    Tonight: Mostly clear, with a low around 71. South wind around 10 mph, with gusts as high as 21 mph.

    Low: 71 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88. South southwest wind 11 to 18 mph, with gusts as high as 25 mph.

    High: 88 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Showers and thunderstorms likely, mainly before 10pm. Partly cloudy, with a low around 72. South wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    Low: 72 °F

    T-storms
    Likely then
    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 88. South southwest wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    High: 88 °F

    Chance
    Showers then
    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 62. West southwest wind 5 to 8 mph becoming calm. Chance of precipitation is 90%.

    Low: 62 °F

    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 73. North wind around 9 mph. Chance of precipitation is 30%.

    High: 73 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 54. Northeast wind 6 to 8 mph.

    Low: 54 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers before 1pm. Partly sunny, with a high near 75. East northeast wind around 8 mph.

    High: 75 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers after 1am. Mostly cloudy, with a low around 58. East wind 3 to 6 mph.

    Low: 58 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 71. South wind around 10 mph, with gusts as high as 21 mph.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88. South southwest wind 11 to 18 mph, with gusts as high as 25 mph.
Monday Night
Showers and thunderstorms likely, mainly before 10pm. Partly cloudy, with a low around 72. South wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 88. South southwest wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 62. West southwest wind 5 to 8 mph becoming calm. Chance of precipitation is 90%.
Wednesday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 73. North wind around 9 mph. Chance of precipitation is 30%.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 54. Northeast wind 6 to 8 mph.
Thursday
A slight chance of showers before 1pm. Partly sunny, with a high near 75. East northeast wind around 8 mph.
Thursday Night
A chance of showers after 1am. Mostly cloudy, with a low around 58. East wind 3 to 6 mph.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78. Light and variable wind becoming south around 6 mph in the morning.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Southeast wind around 5 mph becoming calm in the evening.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Light south southwest wind.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Calm wind becoming south around 6 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
West Frankfort IL
 37.91°N 88.91°W
Last Update:
8:01 pm CDT May 17, 2026
Forecast Valid:
9pm CDT May 17, 2026-6pm CDT May 24, 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