S
M
T
W
T
F
S
26
35°
26°
27
51°
19°
28
57°
28°
29
60°
28°
30
66°
33°
1
73°
34°
2
69°
37°
3
76°
36°
4
54°
38°
5
51°
25°
6
74°
23°
7
69°
47°
8
76°
42°
9
66°
45°
10
80°
40°
11
75°
45°
12
77°
38°
13
89°
45°
14
63°
42°
15
64°
38°
16
56°
40°
17
41°
34°
18
53°
30°
19
64°
33°
20
58°
38°
21
62°
42°
22
70°
45°
23
80°
52°
24
84°
52°
25
82°
50°
26
70°
44°
27
67°
48°
28
74°
50°
29
75°
48°
30
75°
49°
31
71°
49°
1
73°
48°
2
71°
44°
3
70°
44°
4
72°
48°
5
69°
49°
6
65°
42°
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 58° to 84°, with overnight lows between 38° and 52°. The average high for May is 72° with an average low of 47°. 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.