S
M
T
W
T
F
S
29
54°
28°
30
68°
38°
31
70°
52°
1
58°
34°
2
56°
34°
3
76°
42°
4
74°
37°
5
63°
35°
6
43°
34°
7
37°
24°
8
54°
21°
9
72°
44°
10
57°
41°
11
50°
35°
12
66°
31°
13
71°
55°
14
77°
50°
15
77°
49°
16
76°
59°
17
61°
50°
18
78°
42°
19
45°
33°
20
39°
28°
21
56°
27°
22
66°
47°
23
66°
42°
24
51°
40°
25
47°
39°
26
59°
38°
27
69°
48°
28
63°
48°
29
57°
43°
30
48°
36°
1
46°
35°
2
44°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Brownsville
Brownsville's April 2026 forecast shows daily high temperatures ranging from 44° to 69°, with overnight lows between 35° and 48°. The average high for April is 54° with an average low of 40°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Brownsville. See also: May | June | July.