S
M
T
W
T
F
S
27
63°
59°
28
75°
59°
29
74°
56°
30
71°
64°
1
69°
49°
2
65°
44°
3
70°
47°
4
69°
44°
5
68°
41°
6
81°
55°
7
76°
46°
8
67°
44°
9
69°
55°
10
83°
57°
11
80°
59°
12
75°
49°
13
60°
46°
14
56°
51°
15
65°
45°
16
52°
39°
17
53°
40°
18
56°
42°
19
59°
43°
20
57°
40°
21
56°
38°
22
60°
44°
23
48°
37°
24
58°
44°
25
60°
43°
26
54°
40°
27
56°
33°
28
46°
30°
29
49°
41°
30
55°
36°
31
56°
41°
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 46° to 83°, with overnight lows between 30° and 59°. The average high for October is 60° with an average low of 43°. 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.