S
M
T
W
T
F
S
27
79°
54°
28
84°
47°
29
89°
49°
30
93°
55°
1
93°
65°
2
81°
67°
3
73°
66°
4
80°
59°
5
84°
52°
6
83°
47°
7
86°
50°
8
90°
52°
9
92°
59°
10
67°
59°
11
82°
58°
12
91°
61°
13
91°
66°
14
90°
65°
15
90°
63°
16
81°
55°
17
71°
49°
18
68°
49°
19
71°
51°
20
71°
53°
21
72°
48°
22
65°
53°
23
64°
45°
24
64°
43°
25
67°
47°
26
72°
51°
27
72°
48°
28
68°
44°
29
62°
42°
30
67°
49°
31
72°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Brownsville
Brownsville's October 2026 forecast shows daily high temperatures ranging from 62° to 92°, with overnight lows between 42° and 66°. The average high for October is 75° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Brownsville. See also: November | December | January.