S
M
T
W
T
F
S
30
86°
68°
31
86°
67°
1
84°
67°
2
83°
66°
3
82°
66°
4
82°
61°
5
80°
60°
6
82°
61°
7
86°
63°
8
86°
65°
9
84°
65°
10
81°
61°
11
80°
58°
12
82°
59°
13
85°
59°
14
80°
56°
15
78°
56°
16
77°
55°
17
78°
56°
18
79°
57°
19
84°
58°
20
84°
60°
21
83°
61°
22
84°
62°
23
83°
61°
24
79°
59°
25
82°
59°
26
83°
60°
27
83°
58°
28
82°
59°
29
83°
59°
30
82°
58°
1
82°
58°
2
81°
57°
3
81°
50°
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 77° to 86°, with overnight lows between 50° and 68°. The average high for September is 82° with an average low of 60°. 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.