S
M
T
W
T
F
S
26
94°
75°
27
95°
73°
28
95°
76°
29
89°
74°
30
88°
70°
31
88°
67°
1
81°
71°
2
76°
69°
3
85°
63°
4
87°
65°
5
90°
69°
6
93°
72°
7
92°
69°
8
93°
74°
9
95°
73°
10
96°
74°
11
95°
73°
12
95°
74°
13
93°
75°
14
94°
73°
15
95°
74°
16
90°
70°
17
94°
74°
18
94°
73°
19
93°
75°
20
95°
74°
21
93°
73°
22
93°
74°
23
94°
75°
24
93°
74°
25
93°
74°
26
91°
73°
27
88°
73°
28
92°
72°
29
90°
73°
30
91°
72°
31
91°
72°
1
92°
71°
2
92°
72°
3
91°
71°
4
91°
72°
5
90°
71°
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 85° to 96°, with overnight lows between 63° and 75°. The average high for August is 92° with an average low of 72°. 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.
