Local Forecast

Johns Island, SC Weather Forecast & Alerts

Current conditions, 5-day forecast, active weather alerts for Johns Island, SC

No Active Alerts

Hour-by-Hour  Current Observation

Tuesday 8:55 AM EDTTuesday 8:55 AM

°F °C
Regional Observations →
86°F

Mostly Cloudy

  • 93° / 82° High / Low
  • 99° Feels Like
  • 0% Chance of Rain

Wind

16 mph

S

UV Index

4

Moderate

Humidity

79%

Dew 78°F

Sun

6:26 AM · 8:26 PM

Rise · Set

Source: CHARLESTON/EXEC (KJZI). Slider scrubs the next 12 hours.

5-Day Outlook

Through Saturday

Local Radar →

Today

93° 82°

Partly Sunny

Overnight: Mostly Cloudy

Detailed forecast

Today

Mostly sunny, with a high near 92. Heat index values as high as 106. South wind 8 to 17 mph, with gusts as high as 28 mph.

Night

Partly cloudy, with a low around 82. South wind 13 to 17 mph, with gusts as high as 26 mph.

Wednesday

93° 82°

Mostly Cloudy

Overnight: Isolated T-storm

Detailed forecast

Wednesday

Partly sunny, with a high near 92. Heat index values as high as 105. Southwest wind 12 to 17 mph, with gusts as high as 28 mph.

Night

A slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 81. South wind 10 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

Thursday

93° 80°

Chance of Thunderstorms

Overnight: Chance of Thunderstorms

Detailed forecast

Thursday

A slight chance of rain showers before 8am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 92. Southwest wind 7 to 13 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

Night

A chance of showers and thunderstorms before 8pm, then showers and thunderstorms likely between 8pm and 2am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 78. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Friday

91° 78°

Chance of Thunderstorms

Overnight: Chance of Thunderstorms

Detailed forecast

Friday

A chance of showers and thunderstorms. Partly sunny, with a high near 91. Chance of precipitation is 50%.

Night

A chance of showers and thunderstorms before 2am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 78. Chance of precipitation is 50%.

Saturday

91° 77°

Thunderstorms Likely

Overnight: Thunderstorms Likely

Detailed forecast

Saturday

A chance of showers and thunderstorms before 8am, then showers and thunderstorms likely. Partly sunny, with a high near 90. Chance of precipitation is 60%.

Night

Showers and thunderstorms likely before 8pm, then showers and thunderstorms likely between 8pm and 2am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 77. Chance of precipitation is 60%.

Johns Island, SC Weather Analysis Tools