S
M
T
W
T
F
S
31
68°
54°
1
64°
55°
2
65°
53°
3
65°
52°
4
61°
49°
5
61°
49°
6
64°
51°
7
68°
52°
8
68°
50°
9
66°
50°
10
66°
49°
11
68°
51°
12
69°
52°
13
71°
53°
14
66°
48°
15
65°
47°
16
66°
53°
17
66°
50°
18
67°
48°
19
66°
50°
20
66°
52°
21
67°
53°
22
67°
54°
23
68°
54°
24
68°
53°
25
67°
51°
26
66°
51°
27
68°
49°
28
67°
50°
29
67°
54°
30
68°
53°
1
69°
51°
2
69°
55°
3
70°
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 61° to 71°, with overnight lows between 47° and 55°. The average high for June is 67° with an average low of 51°. 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.