S
M
T
W
T
F
S
26
93°
72°
27
97°
73°
28
85°
66°
29
88°
67°
30
88°
68°
31
75°
63°
1
85°
63°
2
84°
65°
3
85°
63°
4
78°
66°
5
77°
59°
6
81°
57°
7
82°
66°
8
82°
60°
9
81°
64°
10
87°
66°
11
87°
69°
12
87°
68°
13
80°
66°
14
81°
63°
15
83°
67°
16
81°
65°
17
84°
58°
18
79°
62°
19
80°
56°
20
81°
54°
21
85°
64°
22
81°
59°
23
79°
54°
24
80°
54°
25
81°
63°
26
81°
58°
27
82°
53°
28
84°
63°
29
78°
67°
30
79°
65°
31
81°
60°
1
73°
56°
2
74°
57°
3
74°
55°
4
75°
59°
5
73°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Brownsville
Brownsville's August 2026 forecast shows daily high temperatures ranging from 73° to 84°, with overnight lows between 53° and 67°. The average high for August is 78° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Brownsville. See also: September | October | November.
