S
M
T
W
T
F
S
26
62°
41°
27
69°
41°
28
64°
39°
29
61°
47°
30
57°
41°
1
57°
37°
2
55°
39°
3
55°
39°
4
61°
44°
5
65°
46°
6
64°
49°
7
63°
46°
8
59°
41°
9
60°
45°
10
60°
43°
11
63°
44°
12
64°
44°
13
64°
46°
14
65°
43°
15
64°
42°
16
63°
42°
17
62°
43°
18
63°
42°
19
68°
48°
20
67°
46°
21
65°
43°
22
66°
44°
23
65°
43°
24
66°
46°
25
67°
52°
26
71°
49°
27
67°
46°
28
67°
46°
29
70°
52°
30
76°
53°
31
76°
51°
1
73°
52°
2
76°
56°
3
78°
55°
4
77°
55°
5
77°
50°
6
71°
49°
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 55° to 78°, with overnight lows between 37° and 56°. 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 Bellingham. See also: June | July | August.
