JOHNS ISLAND, SC 29455 Weather Forecast & Current Conditions
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  29455 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)
 CURRENT WEATHER

CHARLESTON, SC
Current Weather
8:56 PM EDT AUG 22, 2025
Broken Clouds
73°F
Feels Like: 73°F
Dewpoint: 73°F
Rel. Hum.: 100%
Visibility: 10 miles
Wind: NNE at 5 mph
Pressure: 29.99 inches
Last 72 hours

Local Area Snow Depth

South Carolina Current Weather

South Carolina MOS Forecast Weather


Regional Weather Maps

(Automated weather data from NWS/FAA)
  29455 WEATHER FORECAST
10-Day model forecast maps
2025 Hurricanes

JOHNS ISLAND, SC 29455
Weather Forecast

 Snowfall Forecast pages
Snow Depth pages
TONIGHT
Showers and thunderstorms likely. Locally heavy rainfall possible. Lows in the mid 70s. East winds 5 to 10 mph. Chance of rain 70 percent.
SATURDAY
Showers likely with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. Some thunderstorms may produce heavy rainfall in the morning. Some thunderstorms may produce heavy rainfall in the afternoon. Highs around 80. Northeast winds 10 to 15 mph. Chance of rain 90 percent.
SATURDAY NIGHT
Showers likely with a chance of thunderstorms. Some thunderstorms may produce heavy rainfall. Lows in the lower 70s. Northeast winds 5 to 10 mph. Chance of rain 70 percent.
SUNDAY
Mostly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the mid 80s. North winds around 5 mph. Chance of rain 70 percent.
SUNDAY NIGHT
Mostly cloudy with showers likely with a chance of thunderstorms in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the lower 70s. West winds around 5 mph. Chance of rain 60 percent.
MONDAY
Mostly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 30 percent.
MONDAY NIGHT
Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 20 percent.
TUESDAY
Sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 20 percent.
TUESDAY NIGHT
Partly cloudy. Lows around 70.
WEDNESDAY
Mostly sunny with a slight chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 20 percent.
WEDNESDAY NIGHT
Partly cloudy. Lows in the upper 60s.
THURSDAY
Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 80s. Chance of rain 20 percent.
THURSDAY NIGHT
Partly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 20 percent.

  29455 WEATHER SATELLITE LOOPS
Visible Weather Satellite
JOHNS ISLAND, SC 29455
Infrared Weather Satellite
JOHNS ISLAND, SC 29455
  29455 WEATHER RADAR LOOP
NEXRAD Weather Radar
JOHNS ISLAND, SC 29455
 MOS COMPUTER WEATHER FORECAST

CHARLESTON, SC 3 hourly weather forecast
weather forecast created  8:00 AM EDT  8/22/2025
Friday
22 AUG 2025		 JOHNS ISLAND, SC 29455 weather forecast Day 1, 12 hours 2 PM 80° 84° Mostly Cloudy 89%
RAIN
***		 0% Thunder
( 66% severe)		 E   9 79% 73°
High 81° JOHNS ISLAND, SC 29455 weather forecast Day 1, 15 hours 5 PM 79° 83° Mostly Cloudy E   9 85% 74°
Mostly Cloudy

Rain Likely

 JOHNS ISLAND, SC 29455 weather forecast Day 1, 18 hours 8 PM 77° 78° Mostly Cloudy 57%
RAIN
***		 0% Thunder
( 48% severe)		 E   7 87% 73°
JOHNS ISLAND, SC 29455 weather forecast Day 1, 21 hours 11 PM 76° 76° Mostly Cloudy ENE   6 90% 73°
Saturday
23 AUG 2025		 JOHNS ISLAND, SC 29455 weather forecast Day 2, 0 hours 2 AM 75° 75° Mostly Cloudy 56%
RAIN
***		 0% Thunder
( 40% severe)		 NE   6 94% 73°
Low 73° JOHNS ISLAND, SC 29455 weather forecast Day 2, 3 hours 5 AM 75° 75° Mostly Cloudy ENE   7 94% 73°
High 81° JOHNS ISLAND, SC 29455 weather forecast Day 2, 6 hours 8 AM 75° 75° Mostly Cloudy 75%
RAIN
***		 0% Thunder
( 40% severe)		 ENE   8 90% 72°

Mostly Cloudy

Rain Likely

 JOHNS ISLAND, SC 29455 weather forecast Day 2, 9 hours 11 AM 77° 78° Mostly Cloudy ENE   10 85% 72°
JOHNS ISLAND, SC 29455 weather forecast Day 2, 12 hours 2 PM 78° 80° Mostly Cloudy 78%
RAIN
***		 0% Thunder
( 59% severe)		 ENE   10 82% 72°
JOHNS ISLAND, SC 29455 weather forecast Day 2, 15 hours 5 PM 78° 80° Mostly Cloudy ENE   10 85% 73°
JOHNS ISLAND, SC 29455 weather forecast Day 2, 18 hours 8 PM 76° 76° Mostly Cloudy 41%
RAIN
***		 0% Thunder
( 35% severe)		 ENE   8 87% 72°
JOHNS ISLAND, SC 29455 weather forecast Day 2, 21 hours 11 PM 75° 75° Mostly Cloudy ENE   6 90% 72°
Sunday
24 AUG 2025		 JOHNS ISLAND, SC 29455 weather forecast Day 3, 0 hours 2 AM 74° 74° Mostly Cloudy 25%
RAIN
.5–1 in		 0% Thunder
( 24% severe)		 NNE   5 93% 72°
Low 72° JOHNS ISLAND, SC 29455 weather forecast Day 3, 3 hours 5 AM 73° 73° Mostly Cloudy N   5 97% 72°
High 86° JOHNS ISLAND, SC 29455 weather forecast Day 3, 6 hours 8 AM 74° 74° Mostly Cloudy 36%
RAIN
***		 0% Thunder
( 26% severe)		 N   6 93% 72°

Mostly Cloudy

Rain Likely

 JOHNS ISLAND, SC 29455 weather forecast Day 3, 9 hours 11 AM 79° 82° Mostly Cloudy N   7 82% 73°
JOHNS ISLAND, SC 29455 weather forecast Day 3, 15 hours 2 PM 82° 87° Mostly Cloudy 59%
RAIN
***		 0% Thunder
( 62% severe)		 NNW   6 74% 73°
JOHNS ISLAND, SC 29455 weather forecast Day 3, 18 hours 5 PM 82° 87° Mostly Cloudy W   6 74% 73°
JOHNS ISLAND, SC 29455 weather forecast Day 3, 21 hours 8 PM 78° 80° Mostly Cloudy     WSW   3 85% 73°

CHARLESTON, SC extended weather forecast
Monday
25 AUG 2025		 Tuesday
26 AUG 2025		 Wednesday
27 AUG 2025		 Thursday
28 AUG 2025		 Friday
29 AUG 2025
Low 72° Low 70° Low 67° Low 66° Low 64°
High 91° High 86° High 87° High 84° High 84°
JOHNS ISLAND, SC 29455 weather forecast Day 4 JOHNS ISLAND, SC 29455 weather forecast Day 5 JOHNS ISLAND, SC 29455 weather forecast Day 6 JOHNS ISLAND, SC 29455 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Partly Cloudy
47% Rain		 Partly Cloudy
39% Rain		 Partly Cloudy
28% Rain		 Partly Cloudy
22% Rain		 Mostly Cloudy
32% Rain
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