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
81°
73°
5
83°
72°
6
86°
72°
7
88°
71°
8
89°
70°
9
84°
68°
10
85°
70°
11
87°
73°
12
88°
70°
13
84°
67°
14
83°
65°
15
84°
65°
16
80°
62°
17
82°
65°
18
81°
64°
19
82°
66°
20
83°
65°
21
76°
64°
22
76°
61°
23
77°
60°
24
78°
63°
25
79°
63°
26
82°
64°
27
82°
63°
28
80°
63°
29
80°
64°
30
79°
64°
31
78°
63°
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 76° to 89°, with overnight lows between 60° and 73°. The average high for October is 82° with an average low of 66°. 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.
