S
M
T
W
T
F
S
31
68°
49°
1
70°
46°
2
70°
45°
3
65°
47°
4
65°
46°
5
66°
45°
6
65°
46°
7
67°
47°
8
66°
46°
9
67°
45°
10
66°
47°
11
68°
50°
12
67°
46°
13
67°
51°
14
71°
53°
15
69°
54°
16
67°
54°
17
69°
50°
18
68°
49°
19
71°
48°
20
73°
50°
21
73°
50°
22
69°
54°
23
68°
52°
24
69°
53°
25
68°
54°
26
68°
54°
27
69°
50°
28
69°
53°
29
72°
55°
30
69°
55°
1
73°
54°
2
69°
51°
3
69°
54°
4
71°
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 65° to 73°, 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.