S
M
T
W
T
F
S
28
89°
77°
29
89°
77°
30
88°
76°
1
88°
77°
2
89°
76°
3
89°
76°
4
90°
77°
5
90°
77°
6
88°
76°
7
87°
76°
8
87°
75°
9
88°
76°
10
88°
76°
11
89°
77°
12
89°
76°
13
90°
76°
14
90°
75°
15
91°
75°
16
90°
76°
17
89°
74°
18
90°
75°
19
89°
74°
20
89°
74°
21
92°
75°
22
93°
74°
23
92°
74°
24
91°
75°
25
90°
74°
26
90°
74°
27
91°
73°
28
91°
74°
29
92°
74°
30
92°
75°
31
91°
76°
1
92°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Siesta Key
Siesta Key's July 2026 forecast shows daily high temperatures ranging from 87° to 93°, with overnight lows between 73° and 77°. The average high for July is 90° 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 Siesta Key. See also: August | September | October.