S
M
T
W
T
F
S
26
70°
32°
27
59°
43°
28
55°
40°
29
67°
36°
30
77°
39°
1
76°
43°
2
76°
45°
3
81°
47°
4
76°
47°
5
66°
47°
6
58°
47°
7
64°
45°
8
64°
42°
9
69°
40°
10
64°
42°
11
72°
42°
12
81°
53°
13
64°
49°
14
61°
43°
15
52°
41°
16
56°
37°
17
62°
34°
18
67°
42°
19
63°
46°
20
68°
45°
21
76°
41°
22
79°
43°
23
67°
48°
24
71°
46°
25
57°
43°
26
62°
43°
27
74°
42°
28
82°
48°
29
56°
48°
30
63°
45°
31
69°
48°
1
77°
50°
2
85°
56°
3
73°
50°
4
68°
46°
5
65°
47°
6
60°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Brownsville
Brownsville's May 2026 forecast shows daily high temperatures ranging from 60° to 85°, with overnight lows between 46° and 56°. The average high for May is 71° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Brownsville. See also: June | July | August.
