S
M
T
W
T
F
S
28
94°
74°
29
96°
77°
30
96°
76°
1
96°
75°
2
90°
76°
3
90°
77°
4
93°
77°
5
92°
77°
6
93°
76°
7
92°
75°
8
98°
78°
9
97°
78°
10
97°
71°
11
88°
73°
12
91°
82°
13
91°
79°
14
93°
79°
15
92°
83°
16
90°
84°
17
95°
78°
18
94°
77°
19
93°
78°
20
94°
76°
21
93°
76°
22
93°
77°
23
94°
76°
24
92°
76°
25
91°
75°
26
89°
77°
27
90°
78°
28
90°
78°
29
91°
77°
30
91°
78°
31
92°
78°
1
92°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Sanibel
Sanibel's July 2026 forecast shows daily high temperatures ranging from 89° to 95°, with overnight lows between 75° and 84°. The average high for July is 92° 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 Sanibel. See also: August | September | October.