S
M
T
W
T
F
S
30
82°
60°
31
83°
59°
1
84°
59°
2
84°
58°
3
83°
59°
4
83°
59°
5
82°
58°
6
82°
58°
7
81°
54°
8
76°
51°
9
81°
56°
10
81°
56°
11
70°
53°
12
76°
55°
13
81°
57°
14
82°
56°
15
79°
53°
16
74°
52°
17
77°
54°
18
78°
54°
19
79°
53°
20
78°
52°
21
76°
53°
22
76°
53°
23
75°
50°
24
72°
44°
25
69°
47°
26
69°
45°
27
71°
45°
28
71°
47°
29
70°
47°
30
70°
45°
1
68°
42°
2
65°
44°
3
68°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in West Spokane
West Spokane's September 2026 forecast shows daily high temperatures ranging from 65° to 84°, with overnight lows between 42° and 60°. The average high for September is 76° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in West Spokane. See also: October | November | December.