S
M
T
W
T
F
S
30
64°
42°
31
66°
43°
1
66°
40°
2
67°
45°
3
71°
47°
4
73°
46°
5
72°
39°
6
63°
40°
7
64°
40°
8
62°
39°
9
62°
42°
10
61°
41°
11
62°
39°
12
61°
38°
13
60°
37°
14
59°
36°
15
56°
33°
16
58°
33°
17
Hist. Avg.
64°
37°
18
Hist. Avg.
63°
37°
19
Hist. Avg.
63°
37°
20
Hist. Avg.
62°
37°
21
Hist. Avg.
62°
37°
22
Hist. Avg.
61°
36°
23
Hist. Avg.
61°
36°
24
Hist. Avg.
60°
36°
25
Hist. Avg.
60°
36°
26
Hist. Avg.
59°
36°
27
Hist. Avg.
59°
36°
28
Hist. Avg.
58°
36°
29
Hist. Avg.
58°
36°
30
Hist. Avg.
57°
35°
1
Hist. Avg.
57°
35°
2
Hist. Avg.
56°
35°
3
Hist. Avg.
56°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Red Pass
Red Pass's September 2026 forecast shows daily high temperatures ranging from 56° to 73°, with overnight lows between 33° and 47°. The average high for September is 64° with an average low of 40°. 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 Red Pass. See also: October | November | December.