S
M
T
W
T
F
S
30
102°
78°
31
101°
75°
1
100°
77°
2
101°
78°
3
95°
76°
4
101°
74°
5
101°
76°
6
102°
79°
7
102°
79°
8
99°
79°
9
103°
78°
10
95°
75°
11
100°
75°
12
101°
74°
13
93°
67°
14
89°
69°
15
87°
67°
16
95°
72°
17
91°
68°
18
91°
67°
19
83°
61°
20
79°
67°
21
88°
68°
22
87°
67°
23
88°
67°
24
82°
66°
25
77°
66°
26
79°
65°
27
81°
66°
28
84°
66°
29
81°
65°
30
81°
57°
1
72°
52°
2
72°
52°
3
70°
51°
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 70° to 103°, with overnight lows between 51° and 79°. The average high for September is 88° with an average low of 67°. 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.
