Sullivans Island, SC Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Sullivans Island, SC in one place.
Mostly sunny, with a high near 71. South wind 3 to 14 mph.
Local Weather Overview
This forecast page for Sullivans Island, SC is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 20, 2026 9:07 AM EDT.
The active forecast window currently covers Apr 22 to Apr 26, 2026 for Sullivans Island, SC.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 22 to Apr 26, 2026
- Latest sync
- Apr 20, 2026 9:07 AM EDT
- Forecast office
- CHS
- Source
- NOAA / NWS
Daily Outlook
This Week in Sullivans Island
Saturday looks like the warmest upcoming period in Sullivans Island at 76 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 64 degrees F.
The strongest winds are forecast for Wednesday at about 3 to 14 mph S.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 20, 2026 9:07 AM EDT
- Coverage
- 5 days
- Time zone
- America/New_York
- Forecast office
- CHS
- Radar station
- KCLX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 64.
Sunny, with a high near 74.
Mostly clear, with a low around 65.
Sunny, with a high near 74.
Mostly clear, with a low around 68.
A slight chance of rain showers after 2pm. Mostly sunny, with a high near 76. Chance of precipitation is 20%.
A chance of rain showers. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
A chance of rain showers before 8am, then a slight chance of showers and thunderstorms between 8am and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 75. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 22
|
Mostly Sunny
|
71°F |
3 to 14 mph
S
|
|
Wednesday Night
Apr 22
|
Mostly Clear
|
64°F |
8 to 14 mph
SW
|
|
Thursday
Apr 23
|
Sunny
|
74°F |
7 to 12 mph
SW
|
|
Thursday Night
Apr 23
|
Mostly Clear
|
65°F |
7 to 12 mph
SW
|
|
Friday
Apr 24
|
Sunny
|
74°F |
7 to 13 mph
SW
|
|
Friday Night
Apr 24
|
Mostly Clear
|
68°F |
8 to 12 mph
SW
|
|
Saturday
Apr 25
|
Mostly Sunny then Slight Chance Rain Showers
|
76°F |
8 to 14 mph
SW
|
|
Saturday Night
Apr 25
|
Chance Rain Showers
|
67°F |
8 to 13 mph
SW
|
|
Sunday
Apr 26
|
Slight Chance Showers And Thunderstorms
|
75°F |
8 to 13 mph
SW
|
|
Sunday Night
Apr 26
|
Chance Showers And Thunderstorms
|
66°F |
8 to 12 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sullivans Island.