S
M
T
W
T
F
S
26
78°
58°
27
77°
58°
28
80°
57°
29
77°
59°
30
78°
59°
1
79°
58°
2
71°
55°
3
72°
53°
4
74°
59°
5
74°
61°
6
76°
60°
7
81°
61°
8
79°
56°
9
72°
55°
10
74°
62°
11
83°
63°
12
81°
63°
13
83°
62°
14
83°
64°
15
82°
64°
16
84°
63°
17
80°
59°
18
76°
55°
19
77°
61°
20
80°
65°
21
83°
61°
22
83°
59°
23
81°
58°
24
80°
57°
25
81°
60°
26
81°
60°
27
82°
61°
28
80°
60°
29
82°
62°
30
83°
61°
31
82°
61°
1
83°
62°
2
88°
62°
3
89°
64°
4
88°
66°
5
85°
68°
6
87°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fort Sill
Fort Sill's May 2026 forecast shows daily high temperatures ranging from 71° to 89°, with overnight lows between 53° and 69°. The average high for May is 80° with an average low of 61°. 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 Sill. See also: June | July | August.
