S
M
T
W
T
F
S
30
57°
30°
31
50°
38°
1
54°
38°
2
52°
29°
3
57°
27°
4
71°
46°
5
71°
41°
6
62°
35°
7
68°
43°
8
58°
45°
9
55°
43°
10
57°
38°
11
69°
37°
12
57°
42°
13
57°
36°
14
56°
30°
15
51°
31°
16
59°
39°
17
57°
36°
18
51°
30°
19
55°
31°
20
55°
34°
21
49°
31°
22
51°
29°
23
39°
32°
24
49°
31°
25
54°
26°
26
54°
22°
27
47°
21°
28
49°
26°
29
45°
32°
30
37°
28°
1
41°
27°
2
40°
20°
3
39°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Northway
Northway's September 2026 forecast shows daily high temperatures ranging from 39° to 41°, with overnight lows between 20° and 28°. The average high for September is 40° with an average low of 25°. 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 Northway. See also: October | November | December.