S
M
T
W
T
F
S
30
90°
66°
31
86°
69°
1
97°
73°
2
89°
72°
3
93°
72°
4
92°
72°
5
83°
65°
6
85°
60°
7
83°
58°
8
88°
57°
9
91°
65°
10
89°
75°
11
81°
65°
12
82°
65°
13
89°
73°
14
81°
57°
15
79°
52°
16
86°
57°
17
89°
67°
18
87°
69°
19
78°
66°
20
83°
63°
21
70°
59°
22
66°
55°
23
63°
56°
24
65°
55°
25
71°
55°
26
70°
56°
27
72°
54°
28
71°
54°
29
70°
57°
30
75°
57°
1
74°
56°
2
71°
55°
3
70°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Spencerville
Spencerville's September 2026 forecast shows daily high temperatures ranging from 63° to 83°, with overnight lows between 54° and 66°. The average high for September is 71° with an average low of 57°. 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 Spencerville. See also: October | November | December.
