S
M
T
W
T
F
S
27
58°
51°
28
60°
47°
29
66°
50°
30
64°
55°
1
60°
50°
2
60°
52°
3
63°
49°
4
62°
51°
5
61°
53°
6
59°
41°
7
55°
41°
8
57°
42°
9
58°
50°
10
54°
49°
11
55°
46°
12
64°
50°
13
62°
49°
14
64°
49°
15
57°
48°
16
55°
45°
17
54°
38°
18
55°
35°
19
54°
34°
20
57°
47°
21
50°
43°
22
55°
42°
23
51°
43°
24
53°
45°
25
51°
42°
26
57°
48°
27
54°
47°
28
55°
50°
29
56°
49°
30
55°
46°
31
53°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Portrush
Portrush's October 2026 forecast shows daily high temperatures ranging from 51° to 57°, with overnight lows between 42° and 50°. The average high for October is 54° 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 Portrush. See also: November | December | January.