S
M
T
W
T
F
S
28
94°
77°
29
96°
78°
30
96°
78°
1
96°
75°
2
95°
77°
3
96°
76°
4
92°
75°
5
89°
72°
6
90°
73°
7
91°
74°
8
94°
77°
9
98°
77°
10
95°
76°
11
97°
77°
12
94°
72°
13
93°
73°
14
96°
72°
15
98°
73°
16
99°
74°
17
94°
71°
18
95°
73°
19
97°
75°
20
98°
76°
21
97°
76°
22
98°
75°
23
97°
75°
24
96°
74°
25
96°
74°
26
95°
73°
27
97°
74°
28
97°
75°
29
96°
75°
30
97°
74°
31
97°
75°
1
96°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Lavaca
Lavaca's July 2026 forecast shows daily high temperatures ranging from 89° to 99°, with overnight lows between 71° and 77°. The average high for July is 95° with an average low of 74°. 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 Lavaca. See also: August | September | October.