Monthly Historical AveragesJohns Island, SC
Average Temperature
High
28°
Feels 30
Low
18°
Feels 18
Average Precipitation
8 Days
89.2mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastThursday, May 28, 2026
Day
34°Feels 39
Wind
10 km/h W
Gust
14 km/h
Humidity
50%
P.O.P
30%
Rain
<1 mm
Night
23°Feels 23
Wind
13 km/h W
Gust
19 km/h
Humidity
96%
P.O.P
30%
Historical AveragesMay 28
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity