S
M
T
W
T
F
S
26
53°
40°
27
67°
36°
28
54°
47°
29
54°
49°
30
61°
40°
1
63°
35°
2
54°
41°
3
59°
36°
4
73°
38°
5
80°
59°
6
68°
52°
7
64°
48°
8
65°
38°
9
65°
49°
10
70°
48°
11
62°
45°
12
68°
41°
13
67°
50°
14
54°
47°
15
68°
47°
16
79°
46°
17
83°
66°
18
91°
71°
19
92°
72°
20
79°
54°
21
61°
49°
22
63°
52°
23
66°
58°
24
68°
58°
25
69°
59°
26
74°
57°
27
77°
55°
28
75°
57°
29
77°
58°
30
80°
56°
31
78°
60°
1
78°
60°
2
75°
61°
3
71°
61°
4
76°
60°
5
74°
57°
6
75°
60°
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 61° to 92°, with overnight lows between 49° and 72°. The average high for May is 75° 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 Cascade. See also: June | July | August.