S
M
T
W
T
F
S
26
64°
60°
27
70°
61°
28
72°
61°
29
73°
56°
30
75°
56°
31
79°
57°
1
72°
60°
2
69°
54°
3
72°
53°
4
70°
56°
5
72°
56°
6
74°
56°
7
78°
57°
8
73°
58°
9
71°
56°
10
74°
55°
11
72°
55°
12
75°
57°
13
76°
59°
14
75°
59°
15
73°
58°
16
72°
57°
17
73°
56°
18
71°
58°
19
72°
59°
20
71°
57°
21
72°
58°
22
72°
58°
23
73°
59°
24
71°
57°
25
69°
54°
26
72°
59°
27
72°
59°
28
65°
53°
29
64°
57°
30
65°
54°
31
68°
57°
1
67°
57°
2
68°
56°
3
67°
57°
4
68°
57°
5
68°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Boundary Bay Airport
Boundary Bay Airport's August 2026 forecast shows daily high temperatures ranging from 64° to 76°, with overnight lows between 53° and 59°. The average high for August is 70° with an average low of 57°. 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 Boundary Bay Airport. See also: September | October | November.