S
M
T
W
T
F
S
26
90°
74°
27
96°
75°
28
96°
74°
29
93°
79°
30
95°
75°
31
96°
75°
1
92°
74°
2
87°
75°
3
90°
77°
4
90°
75°
5
92°
74°
6
94°
74°
7
92°
72°
8
91°
74°
9
94°
74°
10
95°
74°
11
94°
74°
12
94°
74°
13
96°
74°
14
95°
73°
15
95°
72°
16
96°
75°
17
98°
78°
18
98°
78°
19
97°
77°
20
97°
72°
21
94°
74°
22
N/A
23
95°
69°
24
93°
70°
25
88°
72°
26
90°
70°
27
85°
70°
28
88°
69°
29
89°
69°
30
90°
68°
31
91°
67°
1
90°
66°
2
92°
68°
3
92°
66°
4
90°
67°
5
89°
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 85° to 95°, 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.
