S
M
T
W
T
F
S
26
102°
77°
27
103°
76°
28
103°
76°
29
98°
80°
30
96°
77°
31
103°
76°
1
90°
76°
2
92°
67°
3
94°
67°
4
95°
68°
5
98°
69°
6
100°
72°
7
100°
72°
8
90°
74°
9
99°
71°
10
100°
73°
11
101°
74°
12
103°
76°
13
103°
83°
14
103°
77°
15
103°
72°
16
105°
75°
17
93°
74°
18
101°
77°
19
103°
75°
20
105°
81°
21
102°
76°
22
105°
73°
23
94°
70°
24
82°
70°
25
96°
73°
26
99°
71°
27
95°
70°
28
92°
70°
29
92°
67°
30
95°
64°
31
98°
69°
1
98°
73°
2
97°
73°
3
98°
75°
4
100°
74°
5
103°
75°
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 ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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.
