S
M
T
W
T
F
S
28
96°
74°
29
94°
73°
30
92°
74°
1
92°
74°
2
91°
73°
3
93°
74°
4
94°
73°
5
90°
74°
6
87°
74°
7
88°
75°
8
87°
74°
9
87°
75°
10
88°
74°
11
87°
76°
12
89°
76°
13
91°
75°
14
91°
75°
15
89°
74°
16
88°
75°
17
89°
73°
18
88°
74°
19
87°
73°
20
87°
74°
21
88°
76°
22
90°
75°
23
88°
74°
24
87°
74°
25
88°
75°
26
88°
75°
27
89°
74°
28
88°
76°
29
87°
76°
30
90°
75°
31
91°
76°
1
91°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Johns Island
Johns Island's July 2026 forecast shows daily high temperatures ranging from 87° to 96°, with overnight lows between 73° and 76°. The average high for July is 89° with an average low of 75°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Johns Island. See also: August | September | October.
