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
6:56 AM EDT MAY 17, 2026
Broken Clouds 70°F
Feels Like:	70°F
Dewpoint:	70°F
Rel. Hum.:	100%
Visibility:	10 miles
Wind:	Calm
Pressure:	30.14 inches
Last 72 hours
Local Area Snow Depth
South Carolina Current Weather
South Carolina MOS Forecast Weather

Weather Map

(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

TODAY
Sunny. Highs in the mid 80s, except in the upper 70s near the coast. Southwest winds 10 to 15 mph with gusts up to 25 mph.

TONIGHT
Mostly clear. Lows in the lower 60s. South winds 10 to 15 mph with gusts up to 25 mph, becoming southwest around 5 mph after midnight.

FRIDAY
Sunny. Highs in the lower 90s, except in the mid 80s near the coast. Southwest winds 5 to 10 mph.

FRIDAY NIGHT
Mostly clear. Lows in the mid 60s. Southwest winds 5 to 10 mph.

SATURDAY
Mostly sunny. Highs in the lower 90s, except in the mid 80s near the coast. South winds 5 to 10 mph.

SATURDAY NIGHT
Mostly cloudy. Lows in the mid 60s.

SUNDAY
Partly sunny. Highs in the lower 80s.

SUNDAY NIGHT
Mostly cloudy. Cooler with lows in the lower 50s.

MONDAY
Sunny. Highs in the lower 70s.

MONDAY NIGHT
Mostly clear. Lows in the lower 50s.

TUESDAY
Mostly sunny. Highs in the lower 70s.

TUESDAY NIGHT
Partly cloudy. Lows in the mid 50s.

WEDNESDAY
Sunny. Highs in the upper 70s.

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 PM EDT 5/16/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Sunday
17 MAY 2026

2 AM

70°

70°

Mostly Cloudy

4%

0% Thunder
( 5% severe)

S 6

90%

67°

Low 68°

5 AM

69°

69°

Mostly Cloudy

S 3

97%

68°

High 88°

8 AM

73°

73°

Mostly Cloudy

3%

0% Thunder
( 13% severe)

CALM

90%

70°

Mostly Cloudy

11 AM

82°

85°

Mostly Cloudy

S 8

65%

69°

2 PM

86°

89°

Mostly Cloudy

2%

0% Thunder
( 10% severe)

S 10

53%

67°

5 PM

85°

88°

Partly Cloudy

S 13

55%

67°

8 PM

78°

80°

Partly Cloudy

2%

0% Thunder
( 6% severe)

SSE 9

69%

67°

11 PM

73°

73°

Partly Cloudy

S 6

84%

68°

Monday
18 MAY 2026

2 AM

70°

70°

Partly Cloudy

1%

0% Thunder
( 4% severe)

S 5

93%

68°

Low 67°

5 AM

68°

68°

Partly Cloudy

CALM

97%

67°

High 87°

8 AM

72°

72°

Mostly Cloudy

1%

0% Thunder
( 6% severe)

CALM

90%

69°

Decreasing Clouds

11 AM

82°

84°

Partly Cloudy

SE 6

58%

66°

2 PM

85°

86°

Partly Cloudy

0%

0% Thunder
( 11% severe)

SE 12

50%

64°

5 PM

83°

84°

Clear

SE 13

53%

64°

8 PM

77°

79°

Clear

0%

0% Thunder
( 5% severe)

SE 9

64%

64°

11 PM

72°

72°

Clear

SE 6

79%

65°


CHARLESTON, SC extended weather forecast
Tuesday 19 MAY 2026	Wednesday 20 MAY 2026	Thursday 21 MAY 2026	Friday 22 MAY 2026	Saturday 23 MAY 2026
Low 65°	Low 66°	Low 69°	Low 68°	Low 69°
High 87°	High 89°	High 88°	High 86°	High 88°

Clear 10% Rain	Clear 12% Rain	Clear 17% Rain	Partly Cloudy 29% Rain	Partly Cloudy 36% Rain

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