S
M
T
W
T
F
S
26
98°
70°
27
97°
68°
28
94°
63°
29
88°
65°
30
91°
64°
31
86°
60°
1
86°
60°
2
87°
66°
3
89°
66°
4
91°
70°
5
97°
71°
6
98°
69°
7
96°
72°
8
99°
61°
9
88°
60°
10
87°
63°
11
91°
65°
12
92°
63°
13
90°
62°
14
89°
63°
15
93°
67°
16
95°
70°
17
95°
68°
18
93°
60°
19
82°
62°
20
83°
62°
21
83°
55°
22
81°
54°
23
81°
56°
24
82°
59°
25
88°
60°
26
91°
64°
27
89°
54°
28
78°
53°
29
78°
52°
30
77°
53°
31
80°
60°
1
81°
56°
2
76°
54°
3
77°
50°
4
75°
55°
5
77°
52°
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 75° to 99°, with overnight lows between 50° and 72°. The average high for August is 87° with an average low of 61°. 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.
