S
M
T
W
T
F
S
31
88°
70°
1
92°
74°
2
94°
71°
3
89°
73°
4
88°
73°
5
82°
71°
6
87°
76°
7
90°
75°
8
93°
75°
9
92°
74°
10
94°
74°
11
92°
73°
12
94°
74°
13
93°
73°
14
92°
74°
15
95°
76°
16
92°
73°
17
95°
74°
18
94°
75°
19
94°
75°
20
93°
74°
21
95°
75°
22
95°
75°
23
94°
74°
24
96°
75°
25
96°
75°
26
95°
74°
27
97°
75°
28
96°
73°
29
94°
75°
30
95°
75°
1
95°
74°
2
96°
75°
3
97°
76°
4
96°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Castroville
Castroville's June 2026 forecast shows daily high temperatures ranging from 82° to 97°, with overnight lows between 71° and 76°. The average high for June is 93° with an average low of 74°. 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 Castroville. See also: July | August | September.