S
M
T
W
T
F
S
26
85°
54°
27
87°
55°
28
86°
57°
29
83°
56°
30
86°
55°
31
94°
55°
1
87°
48°
2
74°
49°
3
81°
50°
4
86°
52°
5
92°
54°
6
91°
51°
7
92°
52°
8
93°
55°
9
92°
53°
10
88°
51°
11
91°
53°
12
89°
54°
13
90°
55°
14
85°
48°
15
88°
54°
16
88°
53°
17
88°
53°
18
88°
54°
19
89°
54°
20
88°
53°
21
85°
52°
22
83°
51°
23
84°
52°
24
80°
48°
25
77°
46°
26
85°
50°
27
86°
52°
28
85°
53°
29
86°
52°
30
81°
51°
31
84°
51°
1
79°
45°
2
73°
43°
3
74°
43°
4
78°
47°
5
80°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Spokane Reservation
Spokane Reservation's August 2026 forecast shows daily high temperatures ranging from 73° to 93°, with overnight lows between 43° and 55°. The average high for August is 85° 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 Reservation. See also: September | October | November.