S
M
T
W
T
F
S
30
62°
35°
31
64°
40°
1
66°
43°
2
72°
40°
3
73°
44°
4
72°
35°
5
63°
36°
6
64°
41°
7
68°
40°
8
62°
35°
9
61°
38°
10
60°
39°
11
61°
38°
12
60°
37°
13
60°
35°
14
62°
36°
15
66°
41°
16
69°
34°
17
64°
33°
18
63°
33°
19
68°
37°
20
67°
41°
21
64°
34°
22
59°
33°
23
57°
34°
24
58°
31°
25
57°
31°
26
59°
30°
27
58°
39°
28
57°
38°
29
56°
33°
30
57°
35°
1
61°
38°
2
60°
36°
3
Hist. Avg.
67°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in White Pass
White Pass's September 2026 forecast shows daily high temperatures ranging from 56° to 73°, with overnight lows between 30° and 44°. The average high for September is 63° with an average low of 37°. 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.