S
M
T
W
T
F
S
27
57°
46°
28
59°
46°
29
66°
54°
30
63°
52°
1
59°
48°
2
61°
47°
3
60°
51°
4
63°
57°
5
63°
51°
6
56°
46°
7
54°
46°
8
55°
51°
9
59°
47°
10
55°
46°
11
55°
46°
12
55°
50°
13
57°
49°
14
55°
47°
15
54°
46°
16
54°
45°
17
53°
45°
18
53°
47°
19
56°
48°
20
57°
49°
21
58°
48°
22
57°
43°
23
53°
43°
24
53°
46°
25
54°
44°
26
52°
45°
27
53°
44°
28
52°
46°
29
53°
47°
30
54°
46°
31
54°
42°
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 52° to 63°, with overnight lows between 42° and 57°. The average high for October is 56° with an average low of 47°. 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.