S
M
T
W
T
F
S
30
75°
55°
31
74°
54°
1
75°
57°
2
76°
61°
3
75°
64°
4
83°
64°
5
84°
62°
6
83°
55°
7
81°
54°
8
74°
55°
9
74°
53°
10
73°
56°
11
73°
59°
12
72°
54°
13
75°
56°
14
77°
58°
15
77°
57°
16
71°
58°
17
72°
57°
18
75°
56°
19
76°
50°
20
74°
52°
21
74°
50°
22
75°
48°
23
68°
48°
24
68°
49°
25
69°
49°
26
67°
47°
27
67°
46°
28
66°
48°
29
64°
45°
30
65°
45°
1
65°
50°
2
71°
44°
3
69°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in North Londonderry
North Londonderry's September 2026 forecast shows daily high temperatures ranging from 64° to 84°, with overnight lows between 44° and 64°. The average high for September is 73° with an average low of 53°. 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 North Londonderry. See also: October | November | December.
