S
M
T
W
T
F
S
26
46°
39°
27
46°
39°
28
52°
32°
29
57°
30°
30
54°
30°
1
52°
30°
2
70°
34°
3
71°
54°
4
59°
35°
5
51°
33°
6
51°
35°
7
65°
34°
8
64°
40°
9
69°
42°
10
67°
44°
11
71°
47°
12
76°
50°
13
73°
48°
14
73°
47°
15
72°
50°
16
69°
47°
17
72°
52°
18
72°
52°
19
70°
53°
20
69°
47°
21
65°
45°
22
64°
44°
23
66°
45°
24
66°
45°
25
65°
46°
26
66°
45°
27
66°
46°
28
67°
47°
29
70°
55°
30
68°
51°
31
69°
50°
1
75°
57°
2
78°
58°
3
79°
59°
4
80°
60°
5
80°
60°
6
79°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bellingham
Bellingham's May 2026 forecast shows daily high temperatures ranging from 51° to 80°, with overnight lows between 33° and 61°. The average high for May is 69° with an average low of 48°. 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 Bellingham. See also: June | July | August.
