S
M
T
W
T
F
S
28
95°
75°
29
95°
75°
30
91°
75°
1
88°
73°
2
90°
70°
3
90°
73°
4
N/A
5
92°
78°
6
92°
80°
7
94°
79°
8
93°
78°
9
92°
79°
10
92°
80°
11
94°
79°
12
90°
78°
13
89°
77°
14
90°
76°
15
89°
77°
16
88°
76°
17
89°
78°
18
88°
77°
19
88°
77°
20
91°
80°
21
90°
79°
22
89°
78°
23
88°
78°
24
84°
77°
25
85°
77°
26
85°
78°
27
86°
78°
28
84°
79°
29
83°
78°
30
85°
79°
31
87°
78°
1
88°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Sullivan's Island
Sullivan's Island's July 2026 forecast shows daily high temperatures ranging from 83° to 94°, with overnight lows between 76° and 80°. The average high for July is 89° with an average low of 78°. 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 Sullivan's Island. See also: August | September | October.
