S
M
T
W
T
F
S
26
67°
35°
27
58°
49°
28
57°
49°
29
64°
43°
30
71°
42°
1
70°
45°
2
73°
48°
3
77°
50°
4
79°
55°
5
68°
52°
6
65°
51°
7
68°
50°
8
64°
51°
9
65°
48°
10
68°
50°
11
68°
53°
12
67°
50°
13
63°
51°
14
63°
50°
15
64°
45°
16
60°
51°
17
62°
49°
18
59°
48°
19
59°
46°
20
60°
47°
21
68°
52°
22
66°
52°
23
63°
50°
24
68°
53°
25
68°
52°
26
66°
52°
27
69°
54°
28
70°
54°
29
69°
53°
30
70°
53°
31
71°
54°
1
70°
54°
2
69°
53°
3
70°
55°
4
69°
53°
5
68°
54°
6
66°
54°
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 59° to 79°, with overnight lows between 45° and 55°. The average high for May is 67° with an average low of 51°. 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.
