S
M
T
W
T
F
S
26
84°
64°
27
82°
58°
28
83°
62°
29
83°
62°
30
84°
56°
31
80°
55°
1
79°
62°
2
83°
61°
3
84°
59°
4
83°
57°
5
82°
57°
6
80°
62°
7
82°
64°
8
83°
62°
9
84°
59°
10
84°
54°
11
82°
53°
12
76°
54°
13
79°
53°
14
78°
53°
15
78°
56°
16
81°
61°
17
82°
64°
18
83°
65°
19
82°
64°
20
84°
64°
21
82°
62°
22
80°
58°
23
79°
61°
24
80°
58°
25
72°
57°
26
72°
55°
27
71°
54°
28
69°
52°
29
71°
51°
30
72°
52°
31
72°
53°
1
71°
60°
2
70°
61°
3
70°
60°
4
71°
58°
5
69°
56°
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 69° to 84°, with overnight lows between 51° and 65°. The average high for August is 78° with an average low of 58°. 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.