S
M
T
W
T
F
S
30
81°
61°
31
75°
55°
1
74°
57°
2
73°
55°
3
73°
55°
4
74°
58°
5
74°
61°
6
75°
62°
7
78°
60°
8
80°
59°
9
79°
58°
10
73°
61°
11
79°
60°
12
81°
59°
13
77°
60°
14
77°
58°
15
79°
50°
16
77°
50°
17
69°
48°
18
69°
52°
19
71°
53°
20
72°
56°
21
74°
56°
22
71°
55°
23
75°
56°
24
75°
54°
25
73°
55°
26
75°
55°
27
76°
48°
28
75°
45°
29
73°
45°
30
62°
50°
1
63°
44°
2
66°
49°
3
64°
50°
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 62° to 81°, with overnight lows between 44° and 62°. The average high for September is 74° with an average low of 55°. 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.
