S
M
T
W
T
F
S
30
85°
50°
31
78°
54°
1
71°
60°
2
78°
56°
3
77°
61°
4
85°
58°
5
73°
52°
6
69°
47°
7
80°
42°
8
81°
47°
9
80°
50°
10
86°
66°
11
78°
46°
12
78°
39°
13
69°
56°
14
74°
44°
15
71°
38°
16
79°
43°
17
81°
59°
18
79°
60°
19
66°
41°
20
63°
48°
21
67°
48°
22
64°
46°
23
65°
46°
24
65°
48°
25
65°
55°
26
61°
55°
27
62°
54°
28
62°
54°
29
66°
54°
30
71°
56°
1
72°
55°
2
70°
52°
3
69°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Walpole
Walpole's September 2026 forecast shows daily high temperatures ranging from 61° to 72°, with overnight lows between 48° and 56°. The average high for September is 66° 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 Walpole. See also: October | November | December.
