S
M
T
W
T
F
S
28
89°
74°
29
93°
77°
30
89°
79°
1
88°
77°
2
87°
78°
3
88°
75°
4
88°
76°
5
88°
75°
6
91°
74°
7
91°
76°
8
90°
75°
9
93°
74°
10
92°
76°
11
91°
75°
12
93°
74°
13
91°
76°
14
92°
73°
15
91°
75°
16
88°
74°
17
87°
75°
18
87°
75°
19
88°
74°
20
87°
74°
21
87°
73°
22
88°
75°
23
89°
75°
24
88°
74°
25
88°
75°
26
89°
75°
27
87°
74°
28
88°
75°
29
88°
74°
30
87°
75°
31
90°
75°
1
91°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in St. Augustine South
St. Augustine South's July 2026 forecast shows daily high temperatures ranging from 87° to 93°, with overnight lows between 73° and 78°. 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 St. Augustine South. See also: August | September | October.
