S
M
T
W
T
F
S
26
70°
42°
27
58°
42°
28
61°
49°
29
72°
46°
30
77°
48°
1
79°
47°
2
83°
53°
3
85°
55°
4
84°
57°
5
72°
48°
6
59°
50°
7
68°
53°
8
61°
53°
9
72°
45°
10
69°
45°
11
75°
46°
12
82°
53°
13
65°
53°
14
62°
50°
15
52°
43°
16
54°
43°
17
67°
46°
18
67°
44°
19
63°
52°
20
71°
49°
21
76°
47°
22
79°
48°
23
70°
53°
24
72°
51°
25
60°
52°
26
53°
41°
27
67°
48°
28
72°
50°
29
53°
37°
30
47°
30°
31
53°
33°
1
66°
38°
2
74°
39°
3
63°
38°
4
59°
37°
5
58°
37°
6
56°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mt. Baker
Mt. Baker's May 2026 forecast shows daily high temperatures ranging from 47° to 74°, with overnight lows between 30° and 50°. The average high for May is 60° with an average low of 39°. 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 Mt. Baker. See also: June | July | August.
