S
M
T
W
T
F
S
30
81°
48°
31
89°
61°
1
76°
56°
2
65°
54°
3
64°
52°
4
69°
52°
5
73°
51°
6
76°
51°
7
72°
51°
8
78°
52°
9
81°
55°
10
80°
54°
11
79°
49°
12
73°
54°
13
73°
50°
14
80°
53°
15
82°
51°
16
72°
49°
17
71°
48°
18
71°
43°
19
72°
50°
20
70°
48°
21
69°
43°
22
70°
42°
23
69°
43°
24
68°
41°
25
68°
41°
26
72°
45°
27
75°
50°
28
68°
49°
29
69°
44°
30
73°
47°
1
72°
48°
2
66°
47°
3
66°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in White Salmon
White Salmon's September 2026 forecast shows daily high temperatures ranging from 64° to 89°, with overnight lows between 41° and 61°. The average high for September is 73° with an average low of 49°. 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 Salmon. See also: October | November | December.