S
M
T
W
T
F
S
26
74°
59°
27
79°
59°
28
73°
58°
29
75°
56°
30
76°
56°
31
82°
62°
1
74°
56°
2
72°
55°
3
76°
60°
4
86°
59°
5
84°
61°
6
83°
59°
7
80°
58°
8
78°
60°
9
77°
60°
10
77°
59°
11
79°
61°
12
78°
58°
13
82°
63°
14
82°
62°
15
81°
59°
16
75°
58°
17
73°
54°
18
79°
62°
19
81°
62°
20
81°
63°
21
80°
62°
22
81°
63°
23
82°
63°
24
81°
62°
25
80°
61°
26
81°
62°
27
78°
60°
28
76°
59°
29
75°
60°
30
76°
60°
31
79°
61°
1
80°
61°
2
80°
60°
3
79°
61°
4
79°
61°
5
78°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mount Baker
Mount Baker's August 2026 forecast shows daily high temperatures ranging from 72° to 86°, with overnight lows between 54° and 63°. The average high for August is 79° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Mount Baker. See also: September | October | November.