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
73°
61°
11
65°
58°
12
65°
60°
13
62°
57°
14
63°
55°
15
70°
53°
16
71°
52°
17
74°
51°
18
74°
52°
19
77°
53°
20
77°
54°
21
76°
53°
22
74°
52°
23
70°
46°
24
67°
43°
25
65°
42°
26
70°
50°
27
70°
48°
28
65°
48°
29
64°
44°
30
66°
46°
1
71°
46°
2
71°
47°
3
70°
48°
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 62° to 77°, with overnight lows between 42° and 61°. The average high for September is 70° 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.
