S
M
T
W
T
F
S
26
86°
58°
27
88°
58°
28
89°
57°
29
85°
55°
30
88°
53°
31
94°
55°
1
88°
59°
2
73°
53°
3
79°
46°
4
84°
48°
5
90°
50°
6
94°
54°
7
96°
55°
8
87°
58°
9
88°
53°
10
88°
57°
11
88°
55°
12
85°
55°
13
82°
59°
14
84°
56°
15
87°
56°
16
89°
56°
17
92°
58°
18
90°
62°
19
88°
59°
20
94°
52°
21
99°
57°
22
93°
68°
23
80°
58°
24
86°
51°
25
95°
54°
26
94°
61°
27
88°
53°
28
83°
53°
29
73°
48°
30
76°
46°
31
83°
53°
1
78°
51°
2
70°
50°
3
71°
46°
4
71°
46°
5
80°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Spokane Valley
Spokane Valley's August 2026 forecast shows daily high temperatures ranging from 70° to 94°, with overnight lows between 46° and 61°. The average high for August is 79° with an average low of 51°. 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 Spokane Valley. See also: September | October | November.
