S
M
T
W
T
F
S
26
84°
63°
27
80°
61°
28
65°
48°
29
66°
46°
30
69°
45°
1
71°
45°
2
72°
48°
3
84°
60°
4
87°
64°
5
74°
48°
6
57°
39°
7
72°
52°
8
81°
58°
9
82°
59°
10
77°
53°
11
83°
59°
12
79°
56°
13
79°
55°
14
68°
53°
15
82°
61°
16
81°
60°
17
83°
62°
18
83°
62°
19
84°
63°
20
84°
62°
21
82°
62°
22
76°
56°
23
76°
60°
24
82°
63°
25
78°
57°
26
75°
54°
27
76°
56°
28
79°
60°
29
80°
64°
30
84°
65°
31
86°
65°
1
86°
66°
2
85°
67°
3
88°
67°
4
85°
64°
5
80°
62°
6
81°
60°
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 57° to 88°, with overnight lows between 39° and 67°. The average high for May is 80° with an average low of 59°. 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.
