S
M
T
W
T
F
S
26
58°
44°
27
70°
37°
28
63°
49°
29
60°
54°
30
69°
41°
1
68°
38°
2
59°
40°
3
62°
42°
4
74°
55°
5
85°
63°
6
76°
62°
7
72°
44°
8
63°
43°
9
64°
46°
10
71°
50°
11
68°
50°
12
68°
50°
13
70°
53°
14
72°
53°
15
75°
54°
16
77°
57°
17
78°
58°
18
78°
58°
19
77°
57°
20
78°
58°
21
78°
58°
22
75°
50°
23
69°
50°
24
70°
51°
25
71°
53°
26
73°
52°
27
71°
52°
28
71°
54°
29
72°
53°
30
72°
58°
31
75°
61°
1
78°
61°
2
74°
58°
3
74°
59°
4
79°
62°
5
79°
62°
6
82°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cascades
Cascades's May 2026 forecast shows daily high temperatures ranging from 59° to 85°, with overnight lows between 40° and 63°. The average high for May is 73° with an average low of 54°. 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 Cascades. See also: June | July | August.