S
M
T
W
T
F
S
27
53°
44°
28
56°
43°
29
56°
38°
30
53°
35°
1
46°
29°
2
47°
40°
3
48°
40°
4
52°
44°
5
49°
40°
6
51°
34°
7
46°
33°
8
45°
36°
9
46°
37°
10
47°
36°
11
45°
34°
12
46°
34°
13
44°
31°
14
43°
32°
15
43°
31°
16
42°
29°
17
38°
29°
18
38°
28°
19
38°
32°
20
39°
31°
21
37°
32°
22
38°
32°
23
36°
31°
24
38°
26°
25
35°
25°
26
39°
31°
27
38°
31°
28
36°
30°
29
38°
31°
30
38°
31°
31
39°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Port O'Brien
Port O'Brien's October 2026 forecast shows daily high temperatures ranging from 35° to 52°, with overnight lows between 25° and 44°. The average high for October is 42° with an average low of 33°. 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 Port O'Brien. See also: November | December | January.
