S
M
T
W
T
F
S
26
68°
46°
27
71°
51°
28
71°
51°
29
63°
50°
30
63°
48°
31
62°
48°
1
62°
50°
2
63°
48°
3
63°
50°
4
64°
48°
5
64°
50°
6
70°
51°
7
69°
50°
8
68°
50°
9
70°
51°
10
71°
51°
11
70°
50°
12
72°
52°
13
71°
51°
14
70°
50°
15
69°
51°
16
70°
51°
17
70°
50°
18
69°
50°
19
70°
51°
20
70°
51°
21
69°
50°
22
70°
50°
23
70°
51°
24
68°
42°
25
66°
49°
26
68°
48°
27
69°
49°
28
71°
48°
29
70°
46°
30
70°
49°
31
69°
48°
1
68°
47°
2
68°
41°
3
67°
40°
4
68°
41°
5
67°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Grouse Mountain
Grouse Mountain's August 2026 forecast shows daily high temperatures ranging from 62° to 72°, with overnight lows between 40° and 52°. The average high for August is 68° with an average low of 49°. 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 Grouse Mountain. See also: September | October | November.