S
M
T
W
T
F
S
27
64°
51°
28
66°
50°
29
62°
48°
30
62°
48°
1
63°
50°
2
65°
49°
3
67°
50°
4
69°
50°
5
70°
51°
6
68°
48°
7
67°
46°
8
60°
47°
9
66°
48°
10
65°
47°
11
59°
46°
12
62°
42°
13
56°
39°
14
55°
38°
15
54°
36°
16
54°
34°
17
55°
42°
18
59°
38°
19
54°
36°
20
53°
36°
21
54°
34°
22
53°
35°
23
55°
45°
24
65°
41°
25
66°
36°
26
59°
33°
27
51°
29°
28
52°
28°
29
47°
28°
30
48°
30°
31
49°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Derry
Derry's October 2026 forecast shows daily high temperatures ranging from 47° to 70°, with overnight lows between 28° and 51°. The average high for October is 59° with an average low of 41°. 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 Derry. See also: November | December | January.