S
M
T
W
T
F
S
26
71°
36°
27
57°
44°
28
61°
48°
29
72°
38°
30
80°
42°
1
75°
46°
2
72°
51°
3
91°
48°
4
74°
56°
5
65°
56°
6
68°
55°
7
71°
51°
8
69°
49°
9
79°
45°
10
70°
52°
11
81°
49°
12
83°
59°
13
62°
49°
14
65°
45°
15
58°
44°
16
57°
43°
17
62°
45°
18
67°
43°
19
69°
44°
20
72°
46°
21
79°
48°
22
74°
49°
23
69°
48°
24
69°
46°
25
71°
47°
26
68°
46°
27
68°
47°
28
63°
44°
29
63°
42°
30
65°
43°
31
72°
48°
1
72°
50°
2
65°
50°
3
64°
43°
4
62°
43°
5
63°
44°
6
63°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cascade Locks
Cascade Locks's May 2026 forecast shows daily high temperatures ranging from 57° to 79°, with overnight lows between 42° and 50°. The average high for May is 66° with an average low of 46°. 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 Locks. See also: June | July | August.
