S
M
T
W
T
F
S
31
68°
54°
1
64°
52°
2
68°
55°
3
68°
55°
4
64°
54°
5
63°
52°
6
61°
52°
7
63°
54°
8
63°
50°
9
64°
48°
10
59°
46°
11
63°
48°
12
70°
55°
13
68°
52°
14
72°
48°
15
72°
55°
16
70°
59°
17
66°
61°
18
73°
57°
19
72°
57°
20
73°
55°
21
84°
62°
22
92°
66°
23
97°
67°
24
102°
74°
25
100°
65°
26
82°
63°
27
78°
59°
28
75°
56°
29
74°
55°
30
75°
56°
1
79°
56°
2
77°
59°
3
78°
58°
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 74° to 102°, with overnight lows between 55° and 74°. The average high for June is 83° with an average low of 61°. 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.