S
M
T
W
T
F
S
30
76°
61°
31
77°
61°
1
79°
60°
2
80°
62°
3
81°
61°
4
80°
60°
5
76°
57°
6
75°
58°
7
75°
55°
8
79°
59°
9
77°
59°
10
77°
58°
11
81°
58°
12
84°
57°
13
84°
59°
14
82°
56°
15
71°
53°
16
70°
55°
17
71°
56°
18
75°
56°
19
74°
55°
20
74°
54°
21
81°
49°
22
79°
49°
23
78°
48°
24
79°
41°
25
78°
47°
26
76°
51°
27
80°
53°
28
81°
50°
29
82°
35°
30
77°
36°
1
65°
40°
2
70°
43°
3
71°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Spencer
Spencer's September 2026 forecast shows daily high temperatures ranging from 65° to 84°, with overnight lows between 35° and 62°. The average high for September is 77° with an average low of 53°. 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.
