S
M
T
W
T
F
S
26
74°
56°
27
73°
54°
28
73°
59°
29
74°
54°
30
71°
53°
31
71°
57°
1
73°
57°
2
76°
59°
3
76°
60°
4
74°
58°
5
75°
55°
6
71°
52°
7
71°
54°
8
72°
56°
9
71°
55°
10
70°
54°
11
71°
51°
12
70°
53°
13
73°
58°
14
74°
56°
15
70°
52°
16
69°
50°
17
70°
52°
18
70°
57°
19
71°
58°
20
76°
58°
21
74°
57°
22
76°
57°
23
72°
55°
24
79°
55°
25
74°
55°
26
76°
53°
27
77°
48°
28
70°
47°
29
67°
48°
30
66°
46°
31
66°
45°
1
68°
50°
2
68°
54°
3
67°
56°
4
75°
56°
5
76°
53°
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 66° to 79°, with overnight lows between 45° and 60°. The average high for August is 72° with an average low of 54°. 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.
