S
M
T
W
T
F
S
31
62°
45°
1
62°
45°
2
63°
46°
3
62°
45°
4
62°
45°
5
63°
46°
6
63°
47°
7
64°
47°
8
63°
46°
9
63°
46°
10
64°
47°
11
66°
49°
12
71°
48°
13
72°
49°
14
73°
53°
15
71°
51°
16
67°
51°
17
67°
53°
18
68°
54°
19
72°
54°
20
73°
55°
21
72°
51°
22
74°
54°
23
74°
53°
24
72°
52°
25
73°
51°
26
70°
52°
27
69°
49°
28
69°
51°
29
73°
51°
30
73°
54°
1
74°
53°
2
75°
55°
3
71°
55°
4
69°
53°
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 75°, with overnight lows between 45° and 55°. The average high for June is 69° with an average low of 50°. 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.