S
M
T
W
T
F
S
26
87°
58°
27
90°
66°
28
89°
62°
29
89°
64°
30
90°
66°
31
94°
68°
1
94°
60°
2
84°
57°
3
85°
61°
4
90°
66°
5
95°
68°
6
94°
67°
7
92°
65°
8
93°
66°
9
101°
65°
10
92°
68°
11
91°
68°
12
89°
67°
13
92°
68°
14
93°
67°
15
84°
62°
16
90°
66°
17
89°
66°
18
87°
65°
19
92°
66°
20
92°
67°
21
91°
67°
22
82°
62°
23
90°
66°
24
91°
66°
25
89°
65°
26
81°
62°
27
80°
60°
28
86°
64°
29
84°
64°
30
87°
63°
31
81°
63°
1
82°
62°
2
84°
63°
3
84°
63°
4
83°
62°
5
84°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Walla Walla
Walla Walla's August 2026 forecast shows daily high temperatures ranging from 80° to 101°, with overnight lows between 57° and 68°. The average high for August is 89° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Walla Walla. See also: September | October | November.
