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.

Fog/Mist

77°F

25°C

Humidity 100%
Wind Speed SW 5 mph
Barometer 30.03 in
Dewpoint 77°F (25°C)
Visibility 5.00 mi
Heat Index78°F (26°C)
Last update 13 Aug 4:55 am EDT
Extended Forecast for

Marion SC

  • Today

    Today: A chance of showers and thunderstorms, mainly between 2pm and 3pm. Mostly sunny, with a high near 90. Heat index values as high as 101. Calm wind becoming southwest around 6 mph in the morning. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 2am. Partly cloudy, with a low around 75. Light south wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 75 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers and thunderstorms likely after 11am. Partly sunny, with a high near 88. Southwest wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Chance
    Showers then
    T-storms
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 73. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 73 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Light northeast wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 74. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 74 °F

    Chance
    T-storms

  • Saturday

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

    High: 87 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly between 2pm and 3pm. Mostly sunny, with a high near 90. Heat index values as high as 101. Calm wind becoming southwest around 6 mph in the morning. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 2am. Partly cloudy, with a low around 75. Light south wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers, then showers and thunderstorms likely after 11am. Partly sunny, with a high near 88. Southwest wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 73. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Light northeast wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 74. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 71.
Monday
Sunny, with a high near 90.
Monday Night
Partly cloudy, with a low around 72.
Tuesday
Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Marion SC
 34.17°N 79.41°W (Elev. 52 ft)
Last Update:
4:12 am EDT Aug 13, 2025
Forecast Valid:
5am EDT Aug 13, 2025-6pm EDT Aug 19, 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