S
M
T
W
T
F
S
26
89°
69°
27
88°
69°
28
90°
70°
29
93°
71°
30
93°
68°
31
88°
67°
1
90°
67°
2
89°
68°
3
88°
67°
4
89°
68°
5
88°
67°
6
89°
68°
7
90°
66°
8
87°
67°
9
88°
68°
10
88°
67°
11
89°
67°
12
92°
70°
13
93°
71°
14
92°
70°
15
92°
72°
16
93°
67°
17
91°
70°
18
92°
69°
19
92°
69°
20
88°
67°
21
87°
66°
22
88°
67°
23
89°
67°
24
88°
68°
25
86°
69°
26
89°
66°
27
90°
67°
28
Hist. Avg.
89°
69°
29
Hist. Avg.
89°
68°
30
Hist. Avg.
89°
68°
31
Hist. Avg.
88°
68°
1
Hist. Avg.
88°
68°
2
Hist. Avg.
88°
68°
3
Hist. Avg.
88°
68°
4
Hist. Avg.
88°
67°
5
Hist. Avg.
88°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Jacksonville
Jacksonville's August 2026 forecast shows daily high temperatures ranging from 86° to 93°, with overnight lows between 66° and 72°. The average high for August is 90° with an average low of 68°. 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 Jacksonville. See also: September | October | November.
