S
M
T
W
T
F
S
26
60°
46°
27
76°
41°
28
73°
55°
29
60°
47°
30
55°
38°
1
52°
35°
2
48°
34°
3
59°
30°
4
71°
58°
5
73°
55°
6
58°
43°
7
56°
35°
8
63°
47°
9
64°
41°
10
64°
46°
11
63°
40°
12
62°
44°
13
67°
50°
14
64°
45°
15
65°
46°
16
69°
49°
17
72°
47°
18
75°
52°
19
72°
52°
20
76°
50°
21
73°
49°
22
68°
44°
23
65°
43°
24
67°
46°
25
68°
47°
26
67°
46°
27
68°
45°
28
68°
46°
29
69°
46°
30
70°
47°
31
75°
55°
1
71°
52°
2
72°
48°
3
72°
55°
4
74°
56°
5
76°
57°
6
80°
58°
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 56° to 80°, with overnight lows between 35° and 58°. The average high for May is 69° with an average low of 48°. 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.
