S
M
T
W
T
F
S
30
80°
55°
31
82°
55°
1
81°
47°
2
78°
46°
3
73°
49°
4
77°
53°
5
78°
55°
6
79°
49°
7
79°
45°
8
73°
49°
9
73°
53°
10
71°
53°
11
77°
52°
12
75°
51°
13
70°
50°
14
68°
46°
15
69°
43°
16
68°
42°
17
68°
48°
18
69°
43°
19
71°
49°
20
70°
51°
21
73°
48°
22
71°
40°
23
66°
45°
24
65°
49°
25
67°
42°
26
64°
42°
27
70°
47°
28
71°
47°
29
Hist. Avg.
44°
32°
30
Hist. Avg.
44°
32°
1
Hist. Avg.
43°
31°
2
Hist. Avg.
43°
31°
3
Hist. Avg.
42°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Attitash
Attitash's September 2026 forecast shows daily high temperatures ranging from 64° to 82°, with overnight lows between 40° and 55°. The average high for September is 73° with an average low of 48°. 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 Attitash. See also: October | November | December.