S
M
T
W
T
F
S
26
62°
35°
27
55°
35°
28
55°
37°
29
51°
36°
30
42°
34°
1
46°
26°
2
57°
37°
3
60°
39°
4
62°
30°
5
43°
25°
6
43°
32°
7
64°
39°
8
66°
43°
9
67°
42°
10
64°
41°
11
60°
39°
12
62°
40°
13
62°
39°
14
63°
35°
15
56°
37°
16
56°
34°
17
57°
35°
18
59°
33°
19
63°
37°
20
63°
38°
21
57°
36°
22
59°
34°
23
62°
34°
24
56°
35°
25
55°
32°
26
57°
33°
27
59°
32°
28
61°
34°
29
67°
38°
30
71°
43°
31
67°
44°
1
68°
43°
2
68°
40°
3
71°
41°
4
72°
43°
5
71°
44°
6
72°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cascade
Cascade's May 2026 forecast shows daily high temperatures ranging from 43° to 72°, with overnight lows between 25° and 45°. The average high for May is 61° with an average low of 37°. 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 Cascade. See also: June | July | August.