S
M
T
W
T
F
S
29
77°
36°
30
81°
60°
31
83°
66°
1
86°
67°
2
83°
69°
3
85°
69°
4
76°
56°
5
65°
40°
6
72°
36°
7
74°
41°
8
79°
50°
9
79°
56°
10
81°
50°
11
84°
54°
12
84°
52°
13
80°
68°
14
87°
68°
15
85°
66°
16
86°
60°
17
88°
58°
18
74°
48°
19
69°
38°
20
78°
44°
21
81°
49°
22
83°
56°
23
84°
65°
24
77°
62°
25
79°
60°
26
82°
66°
27
81°
62°
28
77°
55°
29
76°
56°
30
72°
54°
1
70°
51°
2
74°
54°
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 70° to 84°, with overnight lows between 49° and 66°. The average high for April is 78° with an average low of 58°. 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.