S
M
T
W
T
F
S
31
68°
54°
1
64°
52°
2
68°
55°
3
68°
55°
4
63°
50°
5
61°
52°
6
63°
50°
7
66°
53°
8
61°
46°
9
62°
51°
10
63°
48°
11
68°
51°
12
72°
54°
13
73°
56°
14
72°
56°
15
73°
57°
16
72°
55°
17
73°
54°
18
72°
53°
19
66°
54°
20
66°
54°
21
72°
53°
22
72°
55°
23
73°
54°
24
73°
54°
25
72°
54°
26
73°
55°
27
73°
55°
28
74°
54°
29
74°
55°
30
75°
55°
1
73°
54°
2
74°
55°
3
74°
55°
4
75°
54°
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 61° to 75°, with overnight lows between 46° and 57°. 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 Glastonbury. See also: July | August | September.