S
M
T
W
T
F
S
30
76°
53°
31
90°
51°
1
83°
59°
2
77°
56°
3
69°
52°
4
70°
50°
5
71°
52°
6
73°
56°
7
75°
57°
8
74°
58°
9
76°
61°
10
80°
59°
11
83°
61°
12
82°
60°
13
80°
58°
14
79°
52°
15
84°
60°
16
83°
56°
17
71°
51°
18
71°
51°
19
77°
54°
20
75°
57°
21
70°
50°
22
70°
52°
23
74°
53°
24
68°
51°
25
68°
50°
26
69°
51°
27
68°
56°
28
69°
55°
29
67°
49°
30
74°
53°
1
75°
55°
2
65°
54°
3
64°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Walla Walla East
Walla Walla East's September 2026 forecast shows daily high temperatures ranging from 64° to 84°, with overnight lows between 49° and 61°. The average high for September is 74° with an average low of 55°. 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 Walla Walla East. See also: October | November | December.
