S
M
T
W
T
F
S
26
67°
40°
27
75°
39°
28
70°
49°
29
68°
48°
30
59°
46°
1
61°
41°
2
56°
37°
3
57°
36°
4
73°
44°
5
85°
55°
6
62°
45°
7
58°
40°
8
57°
40°
9
56°
39°
10
66°
49°
11
61°
41°
12
62°
37°
13
60°
44°
14
60°
49°
15
67°
47°
16
80°
43°
17
86°
58°
18
92°
57°
19
91°
71°
20
81°
56°
21
62°
50°
22
65°
43°
23
61°
48°
24
56°
52°
25
74°
53°
26
84°
59°
27
82°
57°
28
71°
51°
29
68°
51°
30
70°
47°
31
72°
49°
1
74°
53°
2
72°
52°
3
80°
59°
4
79°
58°
5
81°
60°
6
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Stillwater
Stillwater's May 2026 forecast shows daily high temperatures ranging from 56° to 84°, with overnight lows between 47° and 60°. The average high for May is 74° with an average low of 54°. 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 Stillwater. See also: June | July | August.
