S
M
T
W
T
F
S
30
75°
56°
31
72°
63°
1
86°
67°
2
77°
64°
3
84°
64°
4
75°
63°
5
70°
57°
6
70°
54°
7
72°
46°
8
77°
48°
9
81°
59°
10
79°
63°
11
72°
54°
12
66°
52°
13
81°
63°
14
64°
50°
15
68°
41°
16
77°
57°
17
77°
59°
18
72°
50°
19
66°
59°
20
66°
52°
21
64°
51°
22
60°
49°
23
62°
51°
24
66°
47°
25
67°
48°
26
67°
46°
27
72°
52°
28
70°
50°
29
68°
51°
30
69°
45°
1
69°
50°
2
65°
48°
3
60°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Northeast
Northeast's September 2026 forecast shows daily high temperatures ranging from 60° to 77°, with overnight lows between 45° and 59°. The average high for September is 67° 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 Northeast. See also: October | November | December.
