S
M
T
W
T
F
S
31
71°
57°
1
69°
57°
2
66°
56°
3
68°
56°
4
71°
58°
5
71°
58°
6
72°
59°
7
72°
54°
8
67°
53°
9
67°
53°
10
68°
59°
11
70°
60°
12
74°
61°
13
72°
61°
14
71°
58°
15
69°
58°
16
70°
59°
17
70°
57°
18
71°
60°
19
71°
55°
20
72°
55°
21
73°
60°
22
78°
62°
23
79°
63°
24
74°
58°
25
78°
60°
26
78°
62°
27
77°
60°
28
75°
60°
29
81°
65°
30
82°
64°
1
82°
60°
2
77°
59°
3
77°
62°
4
78°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Groton
Groton's June 2026 forecast shows daily high temperatures ranging from 66° to 82°, with overnight lows between 53° and 65°. The average high for June is 73° with an average low of 59°. 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 Groton. See also: July | August | September.
