S
M
T
W
T
F
S
30
75°
48°
31
76°
48°
1
73°
47°
2
73°
49°
3
74°
50°
4
72°
51°
5
74°
49°
6
73°
48°
7
71°
47°
8
72°
46°
9
70°
46°
10
72°
52°
11
71°
46°
12
71°
45°
13
75°
44°
14
73°
49°
15
74°
49°
16
70°
44°
17
68°
43°
18
71°
43°
19
71°
49°
20
72°
49°
21
74°
48°
22
70°
47°
23
73°
46°
24
71°
43°
25
69°
47°
26
65°
39°
27
71°
39°
28
63°
38°
29
62°
39°
30
65°
42°
1
65°
38°
2
Hist. Avg.
66°
40°
3
Hist. Avg.
66°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Shapleigh
Shapleigh's September 2026 forecast shows daily high temperatures ranging from 62° to 76°, with overnight lows between 38° and 52°. The average high for September is 71° with an average low of 46°. 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 Shapleigh. See also: October | November | December.