S
M
T
W
T
F
S
26
87°
59°
27
89°
60°
28
89°
58°
29
88°
55°
30
92°
57°
31
95°
61°
1
92°
58°
2
85°
56°
3
89°
61°
4
95°
63°
5
95°
61°
6
93°
61°
7
94°
64°
8
101°
61°
9
92°
62°
10
91°
61°
11
90°
60°
12
88°
60°
13
91°
61°
14
91°
60°
15
83°
56°
16
87°
60°
17
88°
59°
18
86°
58°
19
89°
60°
20
90°
59°
21
90°
60°
22
81°
54°
23
88°
59°
24
89°
59°
25
87°
58°
26
77°
57°
27
78°
52°
28
83°
56°
29
86°
58°
30
85°
57°
31
76°
57°
1
82°
56°
2
83°
56°
3
82°
55°
4
80°
54°
5
82°
53°
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 76° to 101°, with overnight lows between 52° and 64°. The average high for August is 88° with an average low of 58°. 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.