S
M
T
W
T
F
S
26
77°
43°
27
63°
36°
28
63°
37°
29
65°
41°
30
62°
38°
1
62°
34°
2
63°
35°
3
63°
36°
4
65°
39°
5
66°
37°
6
72°
39°
7
76°
42°
8
75°
41°
9
76°
42°
10
74°
43°
11
71°
38°
12
69°
37°
13
66°
37°
14
67°
38°
15
69°
41°
16
70°
42°
17
68°
39°
18
68°
40°
19
70°
43°
20
77°
48°
21
81°
50°
22
77°
46°
23
71°
44°
24
74°
50°
25
75°
43°
26
81°
51°
27
84°
49°
28
86°
52°
29
86°
48°
30
85°
47°
31
85°
47°
1
86°
49°
2
87°
55°
3
89°
48°
4
81°
52°
5
86°
49°
6
86°
52°
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 62° to 89°, with overnight lows between 34° and 55°. The average high for May is 74° with an average low of 43°. 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.
