S
M
T
W
T
F
S
26
83°
61°
27
89°
66°
28
71°
55°
29
71°
52°
30
69°
47°
1
70°
45°
2
73°
46°
3
82°
57°
4
82°
67°
5
80°
50°
6
61°
42°
7
69°
50°
8
78°
56°
9
81°
58°
10
77°
55°
11
81°
59°
12
79°
57°
13
78°
54°
14
79°
58°
15
80°
63°
16
80°
64°
17
82°
64°
18
82°
63°
19
83°
65°
20
83°
65°
21
80°
64°
22
76°
61°
23
76°
61°
24
81°
66°
25
79°
64°
26
77°
58°
27
76°
58°
28
79°
63°
29
79°
66°
30
84°
67°
31
86°
67°
1
86°
66°
2
85°
68°
3
87°
68°
4
83°
65°
5
80°
62°
6
80°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fort Gibson
Fort Gibson's May 2026 forecast shows daily high temperatures ranging from 61° to 87°, with overnight lows between 42° and 68°. The average high for May is 79° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Fort Gibson. See also: June | July | August.
