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
52°
41°
23
50°
40°
24
54°
41°
25
51°
47°
26
63°
46°
27
57°
48°
28
57°
50°
29
N/A
30
59°
53°
31
56°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Portstewart
Portstewart's October 2026 forecast shows daily high temperatures ranging from 56° to 59°, with overnight lows between 47° and 53°. The average high for October is 58° with an average low of 50°. 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 Portstewart. See also: November | December | January.
