S
M
T
W
T
F
S
26
77°
51°
27
77°
51°
28
76°
52°
29
76°
57°
30
77°
57°
31
81°
58°
1
82°
58°
2
83°
59°
3
83°
58°
4
82°
51°
5
81°
50°
6
75°
50°
7
74°
51°
8
74°
52°
9
75°
56°
10
80°
53°
11
76°
55°
12
79°
56°
13
80°
53°
14
79°
51°
15
80°
56°
16
74°
53°
17
80°
49°
18
74°
49°
19
74°
48°
20
79°
48°
21
78°
49°
22
78°
54°
23
73°
52°
24
72°
52°
25
72°
54°
26
78°
53°
27
78°
47°
28
75°
46°
29
71°
47°
30
70°
52°
31
71°
54°
1
77°
52°
2
76°
46°
3
71°
45°
4
69°
44°
5
69°
47°
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 69° to 83°, with overnight lows between 44° and 59°. The average high for August is 76° with an average low of 52°. 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.
