S
M
T
W
T
F
S
30
87°
48°
31
79°
47°
1
79°
46°
2
81°
61°
3
86°
57°
4
94°
60°
5
96°
65°
6
87°
63°
7
80°
56°
8
75°
49°
9
75°
52°
10
80°
53°
11
79°
52°
12
72°
47°
13
69°
48°
14
70°
49°
15
74°
45°
16
79°
52°
17
80°
52°
18
79°
51°
19
76°
49°
20
65°
49°
21
76°
48°
22
69°
49°
23
75°
50°
24
74°
48°
25
62°
42°
26
61°
46°
27
61°
44°
28
68°
47°
29
72°
44°
30
67°
47°
1
66°
44°
2
58°
41°
3
70°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New England
New England's September 2026 forecast shows daily high temperatures ranging from 58° to 96°, with overnight lows between 41° and 65°. The average high for September is 74° with an average low of 50°. 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 New England. See also: October | November | December.