S
M
T
W
T
F
S
31
67°
55°
1
64°
54°
2
65°
52°
3
62°
51°
4
63°
49°
5
64°
48°
6
64°
50°
7
66°
51°
8
65°
52°
9
67°
50°
10
66°
51°
11
67°
49°
12
69°
50°
13
70°
51°
14
71°
52°
15
71°
53°
16
70°
53°
17
72°
54°
18
71°
53°
19
65°
53°
20
66°
54°
21
66°
54°
22
67°
53°
23
66°
53°
24
67°
51°
25
66°
48°
26
67°
48°
27
68°
53°
28
66°
52°
29
67°
53°
30
67°
50°
1
68°
50°
2
68°
51°
3
72°
55°
4
74°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Glastonbury
Glastonbury's June 2026 forecast shows daily high temperatures ranging from 62° to 74°, with overnight lows between 48° and 56°. The average high for June is 67° with an average low of 52°. 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 Glastonbury. See also: July | August | September.