S
M
T
W
T
F
S
30
88°
64°
31
89°
59°
1
81°
61°
2
87°
53°
3
80°
57°
4
78°
59°
5
82°
62°
6
88°
59°
7
82°
56°
8
76°
52°
9
76°
51°
10
77°
52°
11
76°
56°
12
79°
53°
13
75°
58°
14
81°
60°
15
82°
61°
16
85°
59°
17
78°
54°
18
74°
59°
19
75°
55°
20
80°
51°
21
81°
50°
22
77°
48°
23
71°
52°
24
78°
51°
25
81°
55°
26
80°
56°
27
Hist. Avg.
74°
51°
28
Hist. Avg.
73°
50°
29
Hist. Avg.
73°
50°
30
Hist. Avg.
72°
50°
1
Hist. Avg.
72°
49°
2
Hist. Avg.
71°
49°
3
Hist. Avg.
70°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Walla Walla East
Walla Walla East's September 2026 forecast shows daily high temperatures ranging from 71° to 89°, with overnight lows between 48° and 64°. The average high for September is 80° with an average low of 56°. 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.
