S
M
T
W
T
F
S
26
70°
48°
27
71°
50°
28
72°
52°
29
74°
54°
30
77°
53°
1
80°
55°
2
79°
53°
3
81°
59°
4
83°
62°
5
84°
63°
6
85°
62°
7
83°
61°
8
81°
62°
9
79°
60°
10
73°
55°
11
75°
54°
12
73°
53°
13
74°
62°
14
84°
63°
15
80°
62°
16
84°
66°
17
87°
64°
18
82°
59°
19
77°
56°
20
78°
62°
21
78°
66°
22
85°
65°
23
79°
60°
24
86°
67°
25
89°
68°
26
89°
68°
27
88°
67°
28
85°
63°
29
89°
67°
30
89°
66°
31
88°
64°
1
89°
63°
2
89°
62°
3
91°
63°
4
91°
68°
5
92°
68°
6
93°
62°
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 70° to 93°, with overnight lows between 48° and 68°. The average high for May is 82° 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.
