S
M
T
W
T
F
S
26
80°
67°
27
84°
63°
28
83°
69°
29
80°
61°
30
83°
54°
31
84°
59°
1
78°
68°
2
83°
70°
3
82°
64°
4
86°
59°
5
86°
68°
6
85°
69°
7
82°
68°
8
88°
63°
9
87°
68°
10
87°
69°
11
83°
67°
12
79°
64°
13
79°
61°
14
78°
59°
15
80°
58°
16
79°
59°
17
80°
58°
18
79°
59°
19
80°
58°
20
84°
62°
21
83°
60°
22
85°
62°
23
86°
63°
24
86°
62°
25
83°
62°
26
83°
61°
27
82°
61°
28
82°
60°
29
81°
61°
30
80°
60°
31
82°
60°
1
83°
59°
2
78°
55°
3
75°
54°
4
78°
55°
5
80°
56°
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 75° to 88°, with overnight lows between 54° and 69°. The average high for August is 82° with an average low of 61°. 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.
