S
M
T
W
T
F
S
26
100°
73°
27
99°
74°
28
101°
71°
29
91°
69°
30
91°
67°
31
94°
65°
1
90°
64°
2
89°
65°
3
90°
67°
4
93°
68°
5
90°
66°
6
90°
67°
7
89°
65°
8
92°
70°
9
92°
69°
10
87°
69°
11
88°
69°
12
92°
68°
13
90°
68°
14
84°
67°
15
88°
69°
16
90°
68°
17
89°
68°
18
90°
69°
19
91°
69°
20
90°
68°
21
88°
67°
22
90°
67°
23
91°
68°
24
91°
68°
25
92°
69°
26
92°
70°
27
91°
70°
28
92°
68°
29
91°
68°
30
90°
67°
31
90°
66°
1
88°
66°
2
87°
65°
3
85°
66°
4
88°
66°
5
88°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Spokane
Spokane's August 2026 forecast shows daily high temperatures ranging from 84° to 101°, with overnight lows between 64° and 74°. The average high for August is 91° with an average low of 68°. 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. See also: September | October | November.