S
M
T
W
T
F
S
29
67°
44°
30
70°
57°
31
80°
59°
1
82°
58°
2
83°
57°
3
81°
59°
4
83°
62°
5
67°
52°
6
63°
45°
7
74°
48°
8
64°
47°
9
73°
45°
10
80°
46°
11
81°
53°
12
83°
56°
13
83°
58°
14
83°
61°
15
85°
62°
16
84°
61°
17
80°
59°
18
80°
60°
19
83°
59°
20
84°
60°
21
85°
49°
22
75°
55°
23
77°
54°
24
77°
56°
25
76°
55°
26
75°
54°
27
76°
54°
28
77°
55°
29
76°
55°
30
77°
56°
1
78°
57°
2
78°
57°
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 64° to 85°, with overnight lows between 45° and 62°. The average high for April is 79° with an average low of 55°. 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.