S
M
T
W
T
F
S
26
62°
43°
27
61°
42°
28
62°
45°
29
64°
41°
30
67°
43°
1
69°
42°
2
62°
41°
3
56°
37°
4
60°
38°
5
60°
39°
6
64°
41°
7
65°
42°
8
60°
39°
9
56°
39°
10
56°
40°
11
57°
38°
12
60°
40°
13
63°
41°
14
61°
42°
15
57°
41°
16
58°
42°
17
60°
41°
18
65°
42°
19
67°
46°
20
61°
44°
21
60°
48°
22
61°
45°
23
60°
45°
24
60°
43°
25
61°
42°
26
62°
42°
27
66°
43°
28
66°
44°
29
68°
47°
30
64°
44°
31
67°
44°
1
71°
52°
2
67°
49°
3
72°
51°
4
73°
52°
5
66°
47°
6
67°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in North Cascades National Park
North Cascades National Park's May 2026 forecast shows daily high temperatures ranging from 56° to 73°, with overnight lows between 37° and 52°. The average high for May is 63° with an average low of 43°. 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 North Cascades National Park. See also: June | July | August.
