JOHNS ISLAND, SC 29455 Weather Forecast & Current Conditions

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CHARLESTON, SC
Current Weather

12:56 AM EDT APR 1, 2026
Few Clouds
63°F
Feels Like: 63°F
Dewpoint: 61°F
Rel. Hum.: 93%
Visibility: 10 miles
Wind: S at 7 mph
Pressure: 30.24 inches
Last 72 hours

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JOHNS ISLAND, SC 29455
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly clear this evening, then becoming partly cloudy. Lows around 60. South winds 5 to 10 mph.
WEDNESDAY
Mostly sunny. Highs around 80, except in the mid 70s near the coast. South winds 5 to 10 mph.
WEDNESDAY NIGHT
Partly cloudy. Lows in the upper 50s. Southeast winds 5 to 10 mph.
THURSDAY
Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs around 80, except in the mid 70s near the coast. Southeast winds 5 to 10 mph. Chance of rain 20 percent.
THURSDAY NIGHT
Mostly clear with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the lower 60s. Southeast winds 5 to 10 mph. Chance of rain 20 percent.
FRIDAY
Mostly sunny. Highs in the upper 70s.
FRIDAY NIGHT
Partly cloudy. Lows in the lower 60s.
SATURDAY
Mostly sunny. Highs in the upper 70s.
SATURDAY NIGHT
Mostly clear. Lows in the lower 60s.
SUNDAY
Partly sunny with a chance of showers with a slight chance of thunderstorms. Highs around 80. Chance of rain 50 percent.
SUNDAY NIGHT
Mostly cloudy with a 50 percent chance of showers. Lows in the mid 50s.
MONDAY
Mostly cloudy with a 40 percent chance of showers. Highs in the upper 60s.
MONDAY NIGHT
Mostly cloudy with a 30 percent chance of showers. Lows around 50.

Visible Weather Satellite
JOHNS ISLAND, SC 29455
Infrared Weather Satellite
JOHNS ISLAND, SC 29455
NEXRAD Weather Radar
JOHNS ISLAND, SC 29455

CHARLESTON, SC 3 hourly weather forecast

weather forecast created  7:00 PM EST  3/31/2026
Wednesday
1 APR 2026
JOHNS ISLAND, SC 29455 weather forecast Day 1, 0 hours 1 AM 63° 63° Partly Cloudy 1%

0% Thunder
( 3% severe)
S   6 87% 59°
Low 60° JOHNS ISLAND, SC 29455 weather forecast Day 1, 3 hours 4 AM 61° 62° Partly Cloudy S   3 93% 59°
High 82° JOHNS ISLAND, SC 29455 weather forecast Day 1, 6 hours 7 AM 62° 63° Mostly Cloudy 3%

0% Thunder
( 4% severe)
SSW   2 93% 60°

Partly Cloudy



JOHNS ISLAND, SC 29455 weather forecast Day 1, 9 hours 10 AM 74° 74° Partly Cloudy SSW   7 64% 61°
JOHNS ISLAND, SC 29455 weather forecast Day 1, 12 hours 1 PM 79° 80° Partly Cloudy 3%

0% Thunder
( 5% severe)
S   9 50% 59°
JOHNS ISLAND, SC 29455 weather forecast Day 1, 15 hours 4 PM 78° 79° Partly Cloudy S   12 52% 59°
JOHNS ISLAND, SC 29455 weather forecast Day 1, 18 hours 7 PM 69° 69° Partly Cloudy 1%

0% Thunder
( 1% severe)
SSE   8 73% 60°
JOHNS ISLAND, SC 29455 weather forecast Day 1, 21 hours 10 PM 65° 65° Partly Cloudy SSE   5 84% 60°
Thursday
2 APR 2026
JOHNS ISLAND, SC 29455 weather forecast Day 2, 0 hours 1 AM 63° 64° Partly Cloudy 1%

0% Thunder
( 1% severe)
SSE   3 90% 60°
Low 59° JOHNS ISLAND, SC 29455 weather forecast Day 2, 3 hours 4 AM 61° 62° Partly Cloudy SE   2 93% 59°
High 82° JOHNS ISLAND, SC 29455 weather forecast Day 2, 6 hours 7 AM 61° 62° Partly Cloudy 7%

0% Thunder
( 1% severe)
E   2 93% 59°

Partly Cloudy



JOHNS ISLAND, SC 29455 weather forecast Day 2, 9 hours 10 AM 75° 75° Partly Cloudy SE   8 58% 59°
JOHNS ISLAND, SC 29455 weather forecast Day 2, 12 hours 1 PM 80° 81° Partly Cloudy 11%
RAIN
<.01 in
0% Thunder
( 8% severe)
SE   12 49% 59°
JOHNS ISLAND, SC 29455 weather forecast Day 2, 15 hours 4 PM 78° 79° Partly Cloudy SE   13 54% 60°
JOHNS ISLAND, SC 29455 weather forecast Day 2, 18 hours 7 PM 70° 70° Partly Cloudy 0%

0% Thunder
( 1% severe)
SE   8 76% 62°
JOHNS ISLAND, SC 29455 weather forecast Day 2, 21 hours 10 PM 67° 67° Partly Cloudy SE   7 87% 63°

CHARLESTON, SC extended weather forecast

BAD DAY
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Low 59° Low 61° Low 61° Low 60° Low 59°
High 80° High 83° High 82° High 80° High 66°
JOHNS ISLAND, SC 29455 weather forecast Day 3 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
Partly Cloudy
58% Rain
Partly Cloudy
24% Rain
Partly Cloudy
26% Rain
Mostly Cloudy
47% Rain
Overcast
64% Rain
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