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

Marion County Airport (KMAO)

Lat: 34.18°NLon: 79.34°WElev: 92ft.

Fair

79°F

26°C

Humidity 70%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 26 Aug 8:35 pm EDT
Extended Forecast for

Marion SC

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 89. Light south wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 89 °F

    Chance
    Showers and
    Patchy Fog
    then Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, mainly before 3am. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 72 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 89. Heat index values as high as 101. Light south wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 89 °F

    Slight Chance
    T-storms then
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 5am, then showers likely. Low around 71. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 71 °F

    Showers

  • Saturday

    Saturday: Showers likely, with thunderstorms also possible after 8am. Mostly cloudy, with a high near 86. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 70.

    Low: 70 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 40%.

    High: 87 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 89. Light south wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A chance of showers and thunderstorms, mainly before 3am. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 89. Heat index values as high as 101. Light south wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and possibly a thunderstorm before 5am, then showers likely. Low around 71. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers likely, with thunderstorms also possible after 8am. Mostly cloudy, with a high near 86. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Mostly cloudy, with a low around 70.
Sunday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 72.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
Sunny, with a high near 94.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marion SC
 34.17°N 79.41°W (Elev. 52 ft)
Last Update:
6:00 pm EDT Aug 26, 2026
Forecast Valid:
8pm EDT Aug 26, 2026-6pm EDT Sep 2, 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