S
M
T
W
T
F
S
31
64°
55°
1
63°
55°
2
63°
55°
3
64°
55°
4
N/A
5
63°
53°
6
62°
54°
7
66°
55°
8
62°
49°
9
63°
48°
10
63°
51°
11
64°
54°
12
68°
50°
13
68°
52°
14
69°
52°
15
70°
53°
16
71°
53°
17
72°
54°
18
72°
53°
19
67°
53°
20
68°
52°
21
72°
53°
22
73°
53°
23
73°
52°
24
72°
54°
25
73°
53°
26
74°
54°
27
74°
54°
28
73°
53°
29
75°
54°
30
75°
54°
1
73°
53°
2
74°
54°
3
74°
54°
4
75°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
June Weather in Castleton
Castleton's June 2026 forecast shows daily high temperatures ranging from 62° to 75°, with overnight lows between 48° and 55°. The average high for June is 70° with an average low of 53°. 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 Castleton. See also: July | August | September.