S
M
T
W
T
F
S
28
92°
79°
29
93°
77°
30
92°
76°
1
93°
76°
2
93°
74°
3
94°
75°
4
94°
77°
5
94°
73°
6
93°
71°
7
91°
74°
8
92°
73°
9
92°
75°
10
95°
76°
11
90°
76°
12
91°
75°
13
81°
75°
14
83°
77°
15
86°
78°
16
90°
77°
17
92°
76°
18
92°
77°
19
94°
74°
20
92°
76°
21
93°
75°
22
94°
77°
23
91°
76°
24
90°
77°
25
92°
76°
26
91°
78°
27
93°
75°
28
92°
78°
29
94°
77°
30
94°
78°
31
93°
78°
1
94°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Port Arthur
Port Arthur's July 2026 forecast shows daily high temperatures ranging from 83° to 94°, with overnight lows between 74° and 78°. The average high for July is 92° with an average low of 77°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Port Arthur. See also: August | September | October.
