S
M
T
W
T
F
S
30
75°
57°
31
78°
57°
1
79°
58°
2
79°
57°
3
78°
49°
4
77°
48°
5
70°
51°
6
71°
55°
7
74°
55°
8
76°
54°
9
77°
55°
10
76°
53°
11
75°
50°
12
75°
51°
13
74°
54°
14
75°
55°
15
75°
54°
16
76°
47°
17
73°
53°
18
71°
51°
19
73°
48°
20
70°
44°
21
65°
41°
22
64°
47°
23
65°
45°
24
70°
42°
25
63°
41°
26
62°
40°
27
63°
46°
28
68°
47°
29
69°
42°
30
65°
41°
1
61°
43°
2
61°
38°
3
60°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mount Major
Mount Major's September 2026 forecast shows daily high temperatures ranging from 60° to 79°, with overnight lows between 38° and 58°. The average high for September is 71° 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 September weather will actually feel in Mount Major. See also: October | November | December.
