S
M
T
W
T
F
S
26
56°
39°
27
54°
49°
28
56°
43°
29
62°
37°
30
70°
44°
1
59°
49°
2
67°
50°
3
82°
49°
4
61°
54°
5
60°
53°
6
56°
51°
7
57°
48°
8
57°
49°
9
67°
51°
10
61°
53°
11
70°
52°
12
71°
51°
13
58°
52°
14
57°
49°
15
53°
47°
16
56°
45°
17
59°
38°
18
60°
48°
19
61°
52°
20
62°
49°
21
66°
45°
22
60°
51°
23
59°
50°
24
61°
45°
25
57°
49°
26
61°
44°
27
62°
50°
28
62°
52°
29
58°
48°
30
60°
47°
31
60°
44°
1
75°
42°
2
82°
49°
3
64°
53°
4
61°
53°
5
60°
51°
6
59°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Copalis Crossing
Copalis Crossing's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Copalis Crossing. See also: June | July | August.