S
M
T
W
T
F
S
30
76°
50°
31
83°
50°
1
84°
51°
2
84°
55°
3
67°
53°
4
71°
52°
5
74°
53°
6
78°
46°
7
71°
59°
8
80°
48°
9
82°
54°
10
80°
59°
11
77°
54°
12
78°
51°
13
71°
49°
14
67°
47°
15
44°
34°
16
60°
41°
17
64°
43°
18
64°
42°
19
64°
41°
20
67°
39°
21
65°
38°
22
57°
33°
23
60°
36°
24
58°
35°
25
56°
37°
26
59°
37°
27
57°
36°
28
54°
27°
29
46°
24°
30
45°
22°
1
46°
22°
2
45°
23°
3
44°
21°
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 44° to 67°, with overnight lows between 21° and 43°. The average high for September is 56° 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.
