S
M
T
W
T
F
S
31
78°
60°
1
74°
64°
2
72°
61°
3
79°
62°
4
74°
62°
5
75°
62°
6
76°
62°
7
69°
63°
8
72°
61°
9
71°
59°
10
71°
60°
11
72°
57°
12
74°
59°
13
72°
59°
14
64°
60°
15
67°
57°
16
76°
56°
17
75°
60°
18
66°
55°
19
69°
53°
20
74°
56°
21
67°
56°
22
71°
55°
23
68°
53°
24
65°
54°
25
63°
51°
26
60°
54°
27
62°
56°
28
65°
55°
29
61°
57°
30
66°
56°
1
59°
56°
2
60°
55°
3
61°
51°
4
60°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grouse Mountain
Grouse Mountain's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Grouse Mountain. See also: October | November | December.
