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Grahamville, SC Marine Weather Forecast

Station MROS1 - 8661070 - Springmaid Pier, SC

June 13, 2026 7:00 am EDT
Location: 33.656N 78.916W
Wind Direction: W (270°)
Wind Speed: 2.9 knots
Wind Gust: 6.0 knots
Atmospheric Pressure: 29.97 in (1014.9 mb)
Pressure Tendency: +0.01 in (+0.5 mb)
Air Temperature: 78.8°F (26.0°C)
Water Temperature: 81.1°F (27.3°C)


Today - 97°F
Jun 13, 2026
2 to 9 mph SW
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 2pm and 4pm, then showers and thunderstorms likely between 4pm and 5pm, then a chance of showers and thunderstorms. Mostly sunny. High near 97, with temperatures falling to around 90 in the afternoon. Heat index values as high as 107. Southwest wind 2 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight - 78°F
Jun 13, 2026
3 to 8 mph S
Chance Showers And Thunderstorms then Partly Cloudy
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 78. Heat index values as high as 101. South wind 3 to 8 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
Sunday - 92°F
Jun 14, 2026
5 to 14 mph SW
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 110. Southwest wind 5 to 14 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Sunday Night - 78°F
Jun 14, 2026
7 to 14 mph SW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 78. Heat index values as high as 105. Southwest wind 7 to 14 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday - 93°F
Jun 15, 2026
9 mph SW
Mostly Sunny then Showers And Thunderstorms Likely
Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 93. Southwest wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday Night - 74°F
Jun 15, 2026
7 mph SW
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy, with a low around 74. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Tuesday - 86°F
Jun 16, 2026
6 to 9 mph W
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 2pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 86. Chance of precipitation is 60%.
Tuesday Night - 71°F
Jun 16, 2026
7 mph SW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 50%.
Wednesday - 87°F
Jun 17, 2026
6 to 12 mph SW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 87. Chance of precipitation is 40%.
Wednesday Night - 75°F
Jun 17, 2026
7 to 10 mph SW
Slight Chance Showers And Thunderstorms then Partly Cloudy
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75.
Thursday - 92°F
Jun 18, 2026
8 to 15 mph SW
Mostly Sunny
Mostly sunny, with a high near 92.
Thursday Night - 79°F
Jun 18, 2026
8 to 15 mph SW
Partly Cloudy
Partly cloudy, with a low around 79.
Juneteenth - 93°F
Jun 19, 2026
9 to 14 mph SW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 93. Chance of precipitation is 40%.
Friday Night - 76°F
Jun 19, 2026
6 to 12 mph SW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 76.

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