S
M
T
W
T
F
S
30
82°
55°
31
78°
53°
1
75°
54°
2
75°
54°
3
76°
55°
4
77°
54°
5
74°
55°
6
74°
60°
7
75°
58°
8
79°
56°
9
75°
53°
10
74°
52°
11
73°
52°
12
74°
55°
13
73°
54°
14
72°
53°
15
73°
57°
16
75°
52°
17
77°
51°
18
76°
51°
19
77°
54°
20
Hist. Avg.
74°
53°
21
Hist. Avg.
74°
52°
22
Hist. Avg.
73°
52°
23
Hist. Avg.
73°
52°
24
Hist. Avg.
73°
51°
25
Hist. Avg.
72°
51°
26
Hist. Avg.
72°
50°
27
Hist. Avg.
71°
50°
28
Hist. Avg.
71°
50°
29
Hist. Avg.
71°
49°
30
Hist. Avg.
70°
49°
1
Hist. Avg.
70°
48°
2
Hist. Avg.
69°
48°
3
Hist. Avg.
69°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Spencerville
Spencerville's September 2026 forecast shows daily high temperatures ranging from 72° to 82°, with overnight lows between 51° and 60°. The average high for September is 75° with an average low of 54°. 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.