S
M
T
W
T
F
S
26
94°
74°
27
96°
76°
28
95°
74°
29
94°
75°
30
96°
76°
31
97°
76°
1
96°
72°
2
95°
72°
3
100°
76°
4
98°
78°
5
98°
77°
6
99°
75°
7
98°
75°
8
97°
74°
9
96°
73°
10
99°
74°
11
100°
73°
12
99°
74°
13
100°
75°
14
95°
71°
15
98°
74°
16
95°
71°
17
97°
74°
18
96°
73°
19
96°
74°
20
97°
75°
21
97°
74°
22
96°
74°
23
97°
73°
24
97°
74°
25
96°
74°
26
96°
73°
27
96°
74°
28
97°
74°
29
96°
73°
30
97°
74°
31
96°
73°
1
95°
72°
2
95°
73°
3
96°
73°
4
96°
72°
5
95°
72°
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 95° to 100°, with overnight lows between 71° and 78°. The average high for August is 97° with an average low of 74°. 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.
