S
M
T
W
T
F
S
26
82°
66°
27
81°
62°
28
77°
55°
29
76°
56°
30
72°
54°
1
70°
51°
2
74°
54°
3
74°
53°
4
77°
56°
5
76°
60°
6
73°
58°
7
76°
60°
8
81°
63°
9
80°
62°
10
80°
62°
11
82°
64°
12
82°
64°
13
81°
59°
14
74°
56°
15
75°
59°
16
79°
63°
17
83°
65°
18
83°
64°
19
80°
57°
20
75°
57°
21
75°
58°
22
79°
65°
23
82°
64°
24
85°
66°
25
86°
67°
26
86°
67°
27
85°
68°
28
86°
68°
29
86°
69°
30
85°
68°
31
83°
66°
1
86°
65°
2
83°
68°
3
83°
65°
4
82°
62°
5
82°
63°
6
86°
66°
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 86°, with overnight lows between 51° and 69°. The average high for May is 80° with an average low of 62°. 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.
