S
M
T
W
T
F
S
31
86°
80°
1
87°
79°
2
87°
79°
3
87°
78°
4
87°
79°
5
87°
79°
6
88°
79°
7
88°
80°
8
87°
80°
9
87°
79°
10
88°
81°
11
87°
79°
12
87°
80°
13
88°
79°
14
88°
79°
15
87°
79°
16
85°
80°
17
86°
79°
18
87°
78°
19
87°
79°
20
87°
78°
21
87°
79°
22
86°
79°
23
87°
79°
24
84°
80°
25
87°
80°
26
87°
78°
27
88°
79°
28
88°
79°
29
88°
80°
30
89°
79°
1
90°
79°
2
88°
78°
3
89°
79°
4
89°
79°
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 84° to 90°, with overnight lows between 78° and 80°. The average high for June is 88° with an average low of 79°. 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.