S
M
T
W
T
F
S
27
67°
55°
28
64°
57°
29
68°
56°
30
76°
54°
1
78°
61°
2
71°
47°
3
61°
43°
4
71°
41°
5
60°
45°
6
57°
36°
7
73°
41°
8
66°
45°
9
66°
42°
10
64°
39°
11
63°
54°
12
71°
53°
13
82°
53°
14
69°
52°
15
57°
49°
16
69°
46°
17
46°
39°
18
64°
34°
19
68°
39°
20
63°
37°
21
62°
31°
22
62°
32°
23
55°
36°
24
63°
35°
25
66°
44°
26
65°
39°
27
51°
35°
28
58°
45°
29
68°
47°
30
64°
44°
31
51°
43°
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 51° to 68°, with overnight lows between 35° and 47°. The average high for October is 61° with an average low of 42°. 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.