S
M
T
W
T
F
S
26
93°
75°
27
93°
76°
28
92°
76°
29
89°
75°
30
89°
74°
31
90°
73°
1
93°
72°
2
92°
72°
3
93°
72°
4
93°
75°
5
92°
73°
6
93°
73°
7
91°
74°
8
90°
74°
9
91°
75°
10
92°
74°
11
91°
76°
12
93°
75°
13
92°
76°
14
92°
75°
15
92°
76°
16
90°
76°
17
90°
75°
18
91°
74°
19
Hist. Avg.
90°
75°
20
Hist. Avg.
90°
75°
21
Hist. Avg.
90°
75°
22
Hist. Avg.
90°
75°
23
Hist. Avg.
90°
75°
24
Hist. Avg.
90°
75°
25
Hist. Avg.
90°
75°
26
Hist. Avg.
90°
74°
27
Hist. Avg.
90°
74°
28
Hist. Avg.
90°
74°
29
Hist. Avg.
90°
74°
30
Hist. Avg.
90°
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.
89°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Saint Johns
Saint Johns's August 2026 forecast shows daily high temperatures ranging from 89° to 93°, with overnight lows between 72° and 76°. The average high for August is 92° with an average low of 74°. 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 Saint Johns. See also: September | October | November.
