S
M
T
W
T
F
S
26
62°
41°
27
59°
45°
28
62°
46°
29
52°
36°
30
49°
32°
1
45°
29°
2
59°
28°
3
68°
48°
4
77°
44°
5
56°
33°
6
54°
32°
7
56°
32°
8
67°
31°
9
63°
40°
10
60°
30°
11
55°
33°
12
75°
35°
13
60°
39°
14
68°
33°
15
78°
46°
16
82°
57°
17
61°
50°
18
72°
60°
19
72°
52°
20
59°
44°
21
57°
42°
22
64°
46°
23
72°
51°
24
77°
52°
25
82°
60°
26
87°
60°
27
82°
48°
28
71°
44°
29
76°
48°
30
70°
47°
31
71°
49°
1
72°
53°
2
76°
54°
3
76°
54°
4
77°
56°
5
75°
55°
6
74°
55°
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 70° to 87°, with overnight lows between 44° and 60°. The average high for May is 76° 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 May weather will actually feel in Brownsville. See also: June | July | August.
