S
M
T
W
T
F
S
27
59°
48°
28
N/A
29
68°
48°
30
64°
52°
1
63°
48°
2
63°
48°
3
61°
46°
4
64°
48°
5
N/A
6
57°
43°
7
56°
44°
8
57°
51°
9
57°
46°
10
55°
47°
11
57°
51°
12
61°
51°
13
59°
50°
14
59°
48°
15
55°
46°
16
54°
46°
17
55°
47°
18
58°
48°
19
59°
48°
20
58°
47°
21
58°
48°
22
57°
48°
23
57°
47°
24
56°
48°
25
58°
48°
26
57°
46°
27
53°
45°
28
52°
43°
29
51°
43°
30
51°
42°
31
52°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Belfast
Belfast's October 2026 forecast shows daily high temperatures ranging from 51° to 61°, with overnight lows between 42° and 51°. 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 Belfast. See also: November | December | January.