S
M
T
W
T
F
S
30
82°
49°
31
79°
48°
1
80°
48°
2
74°
47°
3
70°
46°
4
73°
44°
5
74°
40°
6
75°
41°
7
77°
42°
8
78°
46°
9
79°
47°
10
79°
45°
11
77°
47°
12
76°
44°
13
77°
45°
14
76°
44°
15
75°
45°
16
75°
42°
17
73°
41°
18
70°
40°
19
63°
32°
20
62°
33°
21
Hist. Avg.
72°
41°
22
Hist. Avg.
71°
41°
23
Hist. Avg.
71°
40°
24
Hist. Avg.
70°
40°
25
Hist. Avg.
70°
40°
26
Hist. Avg.
69°
40°
27
Hist. Avg.
69°
39°
28
Hist. Avg.
68°
39°
29
Hist. Avg.
68°
38°
30
Hist. Avg.
67°
38°
1
Hist. Avg.
66°
38°
2
Hist. Avg.
66°
38°
3
Hist. Avg.
65°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Spencer
Spencer's September 2026 forecast shows daily high temperatures ranging from 62° to 82°, with overnight lows between 32° and 49°. The average high for September is 75° with an average low of 43°. 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 Spencer. See also: October | November | December.