S
M
T
W
T
F
S
26
46°
28°
27
44°
38°
28
42°
35°
29
42°
27°
30
41°
24°
1
44°
35°
2
43°
35°
3
46°
33°
4
49°
35°
5
47°
37°
6
40°
31°
7
41°
29°
8
43°
28°
9
46°
31°
10
49°
32°
11
43°
25°
12
47°
32°
13
51°
28°
14
48°
33°
15
50°
33°
16
49°
30°
17
49°
28°
18
50°
30°
19
52°
30°
20
51°
27°
21
55°
31°
22
56°
30°
23
50°
28°
24
51°
31°
25
51°
28°
26
52°
28°
27
51°
29°
28
51°
28°
29
52°
28°
30
53°
29°
31
55°
31°
1
57°
33°
2
57°
36°
3
58°
35°
4
58°
34°
5
60°
37°
6
56°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cantwell
Cantwell's May 2026 forecast shows daily high temperatures ranging from 43° to 60°, with overnight lows between 25° and 37°. The average high for May is 52° with an average low of 31°. 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 Cantwell. See also: June | July | August.