S
M
T
W
T
F
S
27
73°
45°
28
74°
44°
29
76°
47°
30
77°
47°
1
86°
67°
2
71°
48°
3
66°
47°
4
69°
47°
5
65°
39°
6
63°
38°
7
72°
46°
8
74°
44°
9
69°
43°
10
66°
42°
11
66°
44°
12
66°
42°
13
64°
42°
14
68°
39°
15
58°
36°
16
68°
44°
17
68°
44°
18
67°
43°
19
68°
39°
20
58°
35°
21
56°
35°
22
55°
33°
23
58°
39°
24
66°
41°
25
67°
42°
26
66°
33°
27
53°
29°
28
56°
29°
29
59°
36°
30
56°
31°
31
62°
40°
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 53° to 86°, with overnight lows between 29° and 67°. The average high for October is 65° with an average low of 41°. 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.