S
M
T
W
T
F
S
30
71°
52°
31
79°
50°
1
71°
50°
2
72°
51°
3
70°
57°
4
74°
56°
5
78°
56°
6
78°
55°
7
68°
49°
8
67°
49°
9
68°
50°
10
69°
54°
11
75°
56°
12
74°
56°
13
66°
55°
14
68°
57°
15
66°
55°
16
66°
55°
17
67°
51°
18
66°
55°
19
65°
50°
20
66°
48°
21
67°
47°
22
65°
48°
23
65°
48°
24
68°
51°
25
71°
54°
26
69°
52°
27
66°
46°
28
Hist. Avg.
67°
51°
29
Hist. Avg.
66°
50°
30
Hist. Avg.
66°
50°
1
Hist. Avg.
66°
50°
2
Hist. Avg.
65°
50°
3
Hist. Avg.
65°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Spanaway
Spanaway's September 2026 forecast shows daily high temperatures ranging from 65° to 79°, with overnight lows between 46° and 57°. The average high for September is 69° 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 Spanaway. See also: October | November | December.