S
M
T
W
T
F
S
30
81°
48°
31
89°
49°
1
77°
64°
2
71°
54°
3
72°
50°
4
73°
54°
5
75°
55°
6
66°
57°
7
77°
59°
8
85°
48°
9
89°
48°
10
86°
54°
11
76°
53°
12
71°
57°
13
69°
53°
14
77°
49°
15
77°
52°
16
82°
53°
17
83°
58°
18
84°
60°
19
80°
57°
20
77°
54°
21
76°
51°
22
78°
54°
23
88°
55°
24
81°
50°
25
70°
54°
26
71°
50°
27
70°
47°
28
69°
45°
29
68°
44°
30
68°
43°
1
73°
52°
2
73°
50°
3
72°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in The Dalles
The Dalles's September 2026 forecast shows daily high temperatures ranging from 68° to 88°, with overnight lows between 43° and 60°. The average high for September is 76° with an average low of 52°. 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 The Dalles. See also: October | November | December.
