S
M
T
W
T
F
S
26
89°
67°
27
92°
67°
28
76°
59°
29
71°
53°
30
71°
53°
1
71°
49°
2
80°
45°
3
84°
50°
4
88°
57°
5
74°
51°
6
70°
50°
7
78°
44°
8
87°
50°
9
86°
59°
10
68°
56°
11
79°
51°
12
85°
55°
13
89°
60°
14
91°
67°
15
94°
69°
16
88°
73°
17
87°
71°
18
91°
76°
19
80°
55°
20
76°
55°
21
71°
62°
22
83°
64°
23
83°
62°
24
87°
65°
25
87°
62°
26
85°
65°
27
81°
65°
28
86°
63°
29
89°
68°
30
86°
68°
31
84°
66°
1
78°
62°
2
78°
62°
3
80°
58°
4
79°
62°
5
86°
65°
6
87°
67°
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 78° to 89°, with overnight lows between 58° and 68°. The average high for May is 83° with an average low of 64°. 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.
