S
M
T
W
T
F
S
28
86°
73°
29
86°
74°
30
87°
75°
1
88°
75°
2
88°
74°
3
89°
75°
4
89°
75°
5
88°
74°
6
87°
75°
7
88°
75°
8
87°
74°
9
88°
74°
10
89°
72°
11
90°
72°
12
89°
71°
13
90°
72°
14
89°
73°
15
90°
74°
16
89°
74°
17
89°
73°
18
90°
71°
19
89°
71°
20
89°
72°
21
90°
72°
22
90°
73°
23
89°
72°
24
89°
72°
25
90°
73°
26
91°
73°
27
91°
72°
28
90°
73°
29
89°
72°
30
90°
73°
31
89°
73°
1
90°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in St. Augustine Beach
St. Augustine Beach's July 2026 forecast shows daily high temperatures ranging from 86° to 91°, with overnight lows between 71° and 75°. The average high for July is 89° with an average low of 73°. 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 St. Augustine Beach. See also: August | September | October.