S
M
T
W
T
F
S
26
63°
45°
27
55°
43°
28
55°
39°
29
52°
34°
30
50°
32°
1
52°
34°
2
63°
30°
3
70°
53°
4
64°
34°
5
50°
33°
6
49°
38°
7
57°
35°
8
65°
44°
9
67°
45°
10
70°
46°
11
71°
49°
12
74°
51°
13
73°
52°
14
71°
49°
15
72°
52°
16
74°
50°
17
76°
52°
18
73°
54°
19
74°
52°
20
72°
51°
21
68°
47°
22
67°
46°
23
68°
47°
24
69°
47°
25
68°
48°
26
69°
48°
27
68°
49°
28
69°
48°
29
71°
57°
30
70°
54°
31
71°
51°
1
76°
57°
2
78°
59°
3
81°
60°
4
82°
61°
5
82°
62°
6
81°
62°
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 49° to 82°, with overnight lows between 33° and 62°. The average high for May is 70° with an average low of 50°. 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.
