S
M
T
W
T
F
S
26
87°
67°
27
88°
72°
28
91°
69°
29
91°
73°
30
90°
68°
31
93°
67°
1
91°
75°
2
86°
75°
3
81°
74°
4
82°
75°
5
86°
74°
6
87°
74°
7
88°
72°
8
89°
73°
9
88°
71°
10
91°
71°
11
91°
72°
12
88°
71°
13
87°
72°
14
89°
79°
15
85°
71°
16
82°
70°
17
86°
74°
18
89°
74°
19
90°
73°
20
90°
74°
21
86°
71°
22
85°
72°
23
86°
73°
24
89°
74°
25
89°
74°
26
88°
73°
27
87°
74°
28
84°
74°
29
84°
72°
30
88°
73°
31
88°
73°
1
87°
72°
2
88°
71°
3
83°
69°
4
82°
68°
5
82°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Jacksonville
Jacksonville's August 2026 forecast shows daily high temperatures ranging from 81° to 91°, with overnight lows between 67° and 79°. The average high for August is 87° 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 Jacksonville. See also: September | October | November.
