S
M
T
W
T
F
S
28
91°
80°
29
91°
80°
30
92°
76°
1
92°
77°
2
92°
76°
3
92°
76°
4
94°
74°
5
93°
75°
6
93°
75°
7
94°
75°
8
94°
77°
9
93°
75°
10
93°
76°
11
87°
77°
12
92°
77°
13
89°
77°
14
85°
79°
15
83°
73°
16
92°
73°
17
92°
78°
18
92°
77°
19
93°
77°
20
95°
73°
21
96°
77°
22
99°
75°
23
91°
77°
24
93°
77°
25
92°
76°
26
94°
76°
27
93°
74°
28
93°
78°
29
93°
79°
30
94°
79°
31
95°
80°
1
96°
81°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Port Lavaca
Port Lavaca's July 2026 forecast shows daily high temperatures ranging from 93° to 96°, with overnight lows between 79° and 81°. The average high for July is 95° with an average low of 80°. 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 Lavaca. See also: August | September | October.
