S
M
T
W
T
F
S
30
73°
58°
31
62°
47°
1
68°
50°
2
70°
53°
3
69°
54°
4
71°
53°
5
70°
53°
6
74°
57°
7
72°
59°
8
73°
57°
9
75°
59°
10
74°
56°
11
73°
58°
12
65°
51°
13
73°
52°
14
72°
55°
15
66°
50°
16
63°
51°
17
69°
49°
18
71°
49°
19
71°
52°
20
62°
54°
21
65°
53°
22
61°
54°
23
57°
52°
24
60°
52°
25
70°
51°
26
76°
50°
27
77°
53°
28
73°
51°
29
72°
52°
30
75°
49°
1
76°
50°
2
68°
44°
3
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mt Lemmon Ski Valley
Mt Lemmon Ski Valley's September 2026 forecast shows daily high temperatures ranging from 57° to 77°, with overnight lows between 44° and 54°. The average high for September is 69° with an average low of 51°. 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 Mt Lemmon Ski Valley. See also: October | November | December.
