S
M
T
W
T
F
S
26
89°
72°
27
90°
72°
28
90°
73°
29
91°
72°
30
90°
72°
31
90°
76°
1
92°
75°
2
92°
74°
3
91°
73°
4
90°
74°
5
89°
73°
6
91°
74°
7
92°
73°
8
91°
74°
9
92°
74°
10
92°
73°
11
91°
73°
12
91°
72°
13
90°
73°
14
91°
73°
15
89°
74°
16
89°
74°
17
90°
73°
18
91°
73°
19
91°
74°
20
90°
73°
21
91°
73°
22
89°
74°
23
90°
73°
24
91°
72°
25
90°
73°
26
91°
72°
27
92°
73°
28
91°
74°
29
90°
75°
30
Hist. Avg.
89°
74°
31
Hist. Avg.
89°
74°
1
Hist. Avg.
89°
74°
2
Hist. Avg.
89°
74°
3
Hist. Avg.
89°
74°
4
Hist. Avg.
89°
74°
5
Hist. Avg.
88°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in St. Augustine
St. Augustine's August 2026 forecast shows daily high temperatures ranging from 89° to 92°, with overnight lows between 72° and 76°. The average high for August is 91° 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 August weather will actually feel in St. Augustine. See also: September | October | November.
