S
M
T
W
T
F
S
26
100°
73°
27
100°
75°
28
100°
74°
29
100°
74°
30
100°
77°
31
100°
76°
1
96°
69°
2
91°
68°
3
91°
72°
4
95°
72°
5
94°
74°
6
97°
73°
7
96°
74°
8
95°
73°
9
94°
72°
10
94°
72°
11
95°
71°
12
93°
73°
13
93°
72°
14
94°
71°
15
92°
69°
16
89°
68°
17
94°
74°
18
94°
74°
19
93°
73°
20
94°
74°
21
94°
74°
22
93°
73°
23
94°
73°
24
93°
72°
25
93°
73°
26
94°
73°
27
94°
72°
28
93°
73°
29
94°
73°
30
93°
72°
31
92°
72°
1
91°
71°
2
93°
72°
3
93°
72°
4
94°
71°
5
92°
71°
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 89° to 97°, with overnight lows between 68° and 74°. The average high for August is 93° with an average low of 72°. 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.