S
M
T
W
T
F
S
31
89°
75°
1
88°
74°
2
89°
73°
3
88°
75°
4
89°
74°
5
88°
75°
6
89°
72°
7
89°
74°
8
88°
74°
9
89°
73°
10
89°
75°
11
88°
75°
12
89°
74°
13
88°
74°
14
88°
75°
15
89°
75°
16
89°
74°
17
88°
75°
18
89°
74°
19
88°
75°
20
89°
74°
21
88°
75°
22
89°
75°
23
89°
74°
24
88°
75°
25
90°
73°
26
89°
75°
27
90°
74°
28
90°
75°
29
89°
75°
30
90°
74°
1
89°
75°
2
88°
74°
3
89°
75°
4
90°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Castries
Castries's June 2026 forecast shows daily high temperatures ranging from 88° to 90°, with overnight lows between 72° and 75°. The average high for June is 89° 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 Castries. See also: July | August | September.