S
M
T
W
T
F
S
26
90°
70°
27
91°
71°
28
91°
71°
29
94°
73°
30
94°
72°
31
93°
75°
1
94°
74°
2
94°
73°
3
93°
73°
4
92°
72°
5
93°
74°
6
91°
71°
7
90°
70°
8
92°
71°
9
89°
71°
10
88°
72°
11
89°
70°
12
89°
70°
13
92°
71°
14
89°
70°
15
90°
70°
16
91°
71°
17
91°
72°
18
92°
73°
19
93°
71°
20
90°
69°
21
88°
69°
22
90°
71°
23
91°
70°
24
92°
71°
25
91°
73°
26
92°
73°
27
91°
70°
28
91°
70°
29
90°
70°
30
89°
70°
31
91°
69°
1
Hist. Avg.
89°
69°
2
Hist. Avg.
88°
69°
3
Hist. Avg.
88°
69°
4
Hist. Avg.
88°
68°
5
Hist. Avg.
88°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fort Jackson
Fort Jackson's August 2026 forecast shows daily high temperatures ranging from 88° to 94°, with overnight lows between 69° and 75°. The average high for August is 91° with an average low of 71°. 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 Fort Jackson. See also: September | October | November.
