Monthly Historical AveragesJohns Island, SC
Average Temperature
High
32°
Feels 38
Low
24°
Feels 25
Average Precipitation
16 Days
144.3mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, July 29, 2026
Day
37°Feels 40
Wind
13 km/h W
Gust
19 km/h
Humidity
39%
P.O.P
40%
Rain
<1 mm
Night
24°Feels 25
Wind
13 km/h S
Gust
19 km/h
Humidity
87%
P.O.P
40%
Rain
~1 mm
Historical AveragesJul 29
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity