S
M
T
W
T
F
S
28
91°
80°
29
92°
80°
30
92°
79°
1
91°
80°
2
92°
80°
3
92°
79°
4
91°
80°
5
92°
80°
6
93°
79°
7
92°
80°
8
92°
80°
9
93°
79°
10
92°
80°
11
92°
79°
12
91°
80°
13
92°
80°
14
91°
79°
15
92°
80°
16
89°
80°
17
92°
79°
18
93°
80°
19
93°
80°
20
92°
81°
21
94°
81°
22
93°
80°
23
92°
81°
24
92°
81°
25
91°
80°
26
93°
80°
27
92°
79°
28
93°
77°
29
92°
77°
30
91°
78°
31
91°
76°
1
92°
77°
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 89° to 94°, with overnight lows between 76° and 81°. The average high for July is 92° with an average low of 79°. 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.
