Local Forecast

Johns Island, SC Weather Forecast & Alerts

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

No Active Alerts

Hour-by-Hour  Current Observation

Sunday 1:55 PM EDTSunday 1:55 PM

°F °C
Regional Observations →
95°F

Clear

  • 95° / 80° High / Low
  • 103° Feels Like
  • 0% Chance of Rain

Wind

7 mph

G 18 mph

N

UV Index

12

Extreme

Humidity

47%

Dew 71°F

Sun

6:14 AM · 8:31 PM

Rise · Set

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

5-Day Outlook

Through Thursday

Local Radar →

Today

95° 80°

Isolated T-storm

Overnight: Chance of Thunderstorms

Detailed forecast

Today

Mostly sunny, with a high near 95. Heat index values as high as 109. Southwest wind 7 to 13 mph.

Night

A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 79. Heat index values as high as 105. Southwest wind 3 to 13 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

Monday

95° 78°

Chance of Thunderstorms

Overnight: Mostly Clear

Detailed forecast

Monday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95. Heat index values as high as 106. Northwest wind 3 to 7 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

Night

Mostly clear, with a low around 78. Heat index values as high as 102. East wind 2 to 7 mph. New rainfall amounts less than a tenth of an inch possible.

Tuesday

91° 77°

Mostly Sunny

Overnight: Clear

Detailed forecast

Tuesday

Sunny, with a high near 91. East wind 6 to 13 mph.

Night

Clear, with a low around 76.

Wednesday

93° 77°

Mostly Sunny

Overnight: Clear

Detailed forecast

Wednesday

Sunny, with a high near 92.

Night

Clear, with a low around 76.

Thursday

93° 78°

Mostly Sunny

Overnight: Mostly Sunny

Detailed forecast

Thursday

Sunny, with a high near 93.

Night

Mostly clear, with a low around 78.

Johns Island, SC Weather Analysis Tools