Sullivans Island, SC Weather Forecast
Local 7-day forecast
Partly Sunny then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Sullivans Island, SC in one place.
A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. Southwest wind 7 to 13 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
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: Jul 24, 2026 8:35 AM EDT.
The active forecast window currently covers Jul 24 to Jul 30, 2026 for Sullivans Island, SC.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 24 to Jul 30, 2026
- Latest sync
- Jul 24, 2026 8:35 AM EDT
- Forecast office
- CHS
- Source
- NOAA / NWS
Daily Outlook
This Week in Sullivans Island
Wednesday looks like the warmest upcoming period in Sullivans Island at 91 degrees F.
Saturday Night is the coolest period ahead with temperatures near 78 degrees F.
The strongest winds are forecast for Tuesday at about 5 to 15 mph SW.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 24, 2026 8:35 AM EDT
- Coverage
- 7 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
A chance of showers and thunderstorms. Mostly cloudy, with a low around 81. Southwest wind 7 to 12 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of showers and thunderstorms before 4pm, then showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 87. Southwest wind 7 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Showers and thunderstorms before 7pm, then showers and thunderstorms likely between 7pm and 8pm, then showers and thunderstorms likely between 8pm and 2am, then a chance of showers and thunderstorms between 2am and 5am, then a chance of showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 78. West wind 5 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
A chance of showers and thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers and thunderstorms likely. Mostly sunny, with a high near 85. Northeast wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 79. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunny, with a high near 86.
Mostly clear, with a low around 80.
Mostly sunny, with a high near 89.
Mostly clear, with a low around 82.
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 80. Chance of precipitation is 40%.
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 79. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 24
|
Partly Sunny then Chance Showers And Thunderstorms
|
87°F |
7 to 13 mph
SW
|
|
Tonight
Jul 24
|
Chance Showers And Thunderstorms
|
81°F |
7 to 12 mph
SW
|
|
Saturday
Jul 25
|
Chance Showers And Thunderstorms
|
87°F |
7 to 10 mph
SW
|
|
Saturday Night
Jul 25
|
Showers And Thunderstorms
|
78°F |
5 to 8 mph
W
|
|
Sunday
Jul 26
|
Chance Showers And Thunderstorms
|
85°F |
8 mph
NE
|
|
Sunday Night
Jul 26
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
79°F |
3 to 7 mph
S
|
|
Monday
Jul 27
|
Sunny
|
86°F |
3 to 10 mph
E
|
|
Monday Night
Jul 27
|
Mostly Clear
|
80°F |
6 to 10 mph
S
|
|
Tuesday
Jul 28
|
Mostly Sunny
|
89°F |
5 to 15 mph
SW
|
|
Tuesday Night
Jul 28
|
Mostly Clear
|
82°F |
12 to 15 mph
SW
|
|
Wednesday
Jul 29
|
Mostly Sunny then Chance Showers And Thunderstorms
|
91°F |
10 to 15 mph
SW
|
|
Wednesday Night
Jul 29
|
Chance Showers And Thunderstorms
|
80°F |
7 to 13 mph
SW
|
|
Thursday
Jul 30
|
Mostly Sunny then Chance Showers And Thunderstorms
|
89°F |
7 to 10 mph
W
|
|
Thursday Night
Jul 30
|
Chance Showers And Thunderstorms
|
79°F |
3 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sullivans Island.