S
M
T
W
T
F
S
26
97°
77°
27
98°
77°
28
97°
76°
29
97°
77°
30
98°
77°
31
98°
76°
1
97°
77°
2
99°
77°
3
99°
76°
4
98°
77°
5
99°
77°
6
98°
76°
7
98°
77°
8
98°
77°
9
98°
76°
10
98°
75°
11
96°
74°
12
97°
76°
13
97°
75°
14
96°
73°
15
90°
70°
16
90°
69°
17
92°
72°
18
94°
73°
19
95°
73°
20
95°
74°
21
96°
74°
22
95°
73°
23
94°
73°
24
96°
71°
25
96°
72°
26
87°
71°
27
90°
65°
28
91°
63°
29
86°
64°
30
85°
64°
31
86°
68°
1
85°
63°
2
85°
61°
3
83°
59°
4
82°
61°
5
84°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fort Gibson
Fort Gibson's August 2026 forecast shows daily high temperatures ranging from 82° to 99°, with overnight lows between 59° and 77°. The average high for August is 94° with an average low of 72°. 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 Gibson. See also: September | October | November.
