S
M
T
W
T
F
S
30
65°
44°
31
65°
42°
1
64°
43°
2
64°
43°
3
65°
42°
4
64°
41°
5
65°
42°
6
64°
46°
7
63°
45°
8
64°
44°
9
63°
44°
10
62°
43°
11
65°
46°
12
66°
44°
13
63°
41°
14
60°
38°
15
60°
39°
16
63°
39°
17
65°
44°
18
65°
42°
19
64°
46°
20
66°
45°
21
66°
45°
22
65°
44°
23
64°
42°
24
62°
40°
25
56°
36°
26
57°
42°
27
58°
39°
28
60°
38°
29
54°
37°
30
54°
38°
1
Hist. Avg.
56°
37°
2
Hist. Avg.
55°
37°
3
Hist. Avg.
55°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Northern
Northern's September 2026 forecast shows daily high temperatures ranging from 54° to 66°, with overnight lows between 36° and 46°. The average high for September is 63° with an average low of 42°. 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 Northern. See also: October | November | December.
