| NWS Forecast for: Saint Helena Island SC Issued by: National Weather Service Charleston, SC Last Update: 1:43 pm EDT Jul 13, 2025 | |
| This Afternoon: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 93. Heat index values as high as 105. South wind around 5 mph. Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 76. Calm wind. Monday: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 91. Heat index values as high as 101. Calm wind becoming east around 6 mph in the afternoon. Monday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 77. East wind around 5 mph becoming calm in the evening. Tuesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. Light east wind becoming southeast 5 to 9 mph in the morning. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. Tuesday Night: A chance of thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 77. Chance of precipitation is 30%. Wednesday: A slight chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 60%. Wednesday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 78. Thursday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89. Thursday Night: Partly cloudy, with a low around 78. Friday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. Friday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78. Saturday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Saturday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78. Sunday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 94. | |
| Saint Helena Island SC 32.39°N 80.57°W (Elev. 20 ft) | |
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