S
M
T
W
T
F
S
30
73°
45°
31
74°
47°
1
73°
46°
2
74°
47°
3
74°
42°
4
72°
44°
5
72°
47°
6
73°
44°
7
73°
43°
8
71°
37°
9
63°
40°
10
64°
34°
11
66°
37°
12
66°
36°
13
60°
34°
14
60°
32°
15
61°
31°
16
62°
34°
17
61°
39°
18
59°
34°
19
60°
36°
20
59°
36°
21
62°
34°
22
63°
32°
23
66°
35°
24
62°
36°
25
Hist. Avg.
71°
45°
26
Hist. Avg.
71°
44°
27
Hist. Avg.
70°
44°
28
Hist. Avg.
70°
44°
29
Hist. Avg.
69°
44°
30
Hist. Avg.
69°
44°
1
Hist. Avg.
68°
43°
2
Hist. Avg.
68°
43°
3
Hist. Avg.
67°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in White Pass
White Pass's September 2026 forecast shows daily high temperatures ranging from 59° to 74°, with overnight lows between 31° and 47°. The average high for September is 66° with an average low of 39°. 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 White Pass. See also: October | November | December.