S
M
T
W
T
F
S
27
92°
73°
28
93°
73°
29
93°
74°
30
93°
78°
1
94°
80°
2
94°
76°
3
89°
76°
4
78°
73°
5
86°
71°
6
90°
70°
7
90°
74°
8
91°
71°
9
87°
68°
10
86°
66°
11
87°
71°
12
89°
72°
13
87°
73°
14
85°
68°
15
84°
67°
16
83°
64°
17
80°
62°
18
79°
62°
19
78°
63°
20
80°
60°
21
76°
64°
22
76°
61°
23
75°
57°
24
74°
56°
25
75°
58°
26
78°
58°
27
78°
59°
28
79°
62°
29
76°
59°
30
74°
62°
31
76°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Port Arthur
Port Arthur's October 2026 forecast shows daily high temperatures ranging from 74° to 91°, with overnight lows between 56° and 74°. The average high for October is 81° with an average low of 64°. 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 Arthur. See also: November | December | January.
