S
M
T
W
T
F
S
30
62°
36°
31
64°
38°
1
67°
39°
2
68°
39°
3
67°
38°
4
66°
38°
5
65°
37°
6
65°
37°
7
59°
31°
8
56°
29°
9
64°
37°
10
65°
37°
11
55°
29°
12
57°
30°
13
66°
36°
14
67°
38°
15
65°
35°
16
60°
34°
17
63°
36°
18
65°
37°
19
65°
34°
20
63°
32°
21
61°
35°
22
62°
34°
23
58°
29°
24
57°
25°
25
54°
23°
26
55°
26°
27
58°
28°
28
59°
32°
29
60°
32°
30
58°
22°
1
52°
24°
2
53°
28°
3
57°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mount Baldy
Mount Baldy's September 2026 forecast shows daily high temperatures ranging from 52° to 68°, with overnight lows between 22° and 39°. The average high for September is 61° with an average low of 33°. 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 Baldy. See also: October | November | December.
