S
M
T
W
T
F
S
31
78°
53°
1
70°
55°
2
76°
55°
3
83°
64°
4
86°
66°
5
91°
64°
6
90°
70°
7
86°
63°
8
77°
61°
9
81°
66°
10
85°
69°
11
84°
73°
12
87°
72°
13
86°
70°
14
81°
71°
15
81°
70°
16
81°
69°
17
82°
67°
18
79°
66°
19
83°
67°
20
81°
70°
21
83°
69°
22
83°
70°
23
79°
70°
24
80°
67°
25
78°
70°
26
83°
69°
27
84°
73°
28
86°
72°
29
82°
68°
30
79°
66°
1
80°
69°
2
83°
68°
3
80°
68°
4
82°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Brownsville
Brownsville's June 2026 forecast shows daily high temperatures ranging from 77° to 90°, with overnight lows between 61° and 73°. The average high for June is 82° with an average low of 69°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Brownsville. See also: July | August | September.