S
M
T
W
T
F
S
27
74°
46°
28
71°
42°
29
64°
61°
30
77°
54°
1
60°
43°
2
59°
38°
3
63°
47°
4
62°
37°
5
60°
31°
6
72°
43°
7
63°
47°
8
63°
35°
9
65°
51°
10
79°
57°
11
69°
48°
12
51°
42°
13
50°
38°
14
56°
43°
15
56°
39°
16
49°
33°
17
53°
36°
18
56°
39°
19
56°
37°
20
55°
40°
21
50°
31°
22
56°
38°
23
43°
31°
24
54°
37°
25
55°
34°
26
52°
33°
27
47°
26°
28
41°
30°
29
50°
33°
30
47°
31°
31
51°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Coleraine
Coleraine's October 2026 forecast shows daily high temperatures ranging from 41° to 79°, with overnight lows between 26° and 57°. The average high for October is 54° with an average low of 37°. 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 Coleraine. See also: November | December | January.