S
M
T
W
T
F
S
27
57°
46°
28
59°
46°
29
66°
54°
30
63°
52°
1
59°
48°
2
61°
46°
3
57°
45°
4
63°
50°
5
61°
50°
6
55°
37°
7
54°
36°
8
57°
37°
9
56°
46°
10
53°
43°
11
57°
53°
12
62°
51°
13
59°
52°
14
59°
49°
15
53°
43°
16
55°
47°
17
56°
47°
18
56°
46°
19
55°
48°
20
55°
46°
21
53°
45°
22
56°
45°
23
53°
44°
24
53°
44°
25
54°
42°
26
52°
45°
27
56°
43°
28
51°
43°
29
50°
44°
30
51°
45°
31
54°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Londonderry
Londonderry's October 2026 forecast shows daily high temperatures ranging from 50° to 62°, with overnight lows between 42° and 53°. The average high for October is 55° with an average low of 46°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Londonderry. See also: November | December | January.