S
M
T
W
T
F
S
31
71°
38°
1
68°
41°
2
74°
39°
3
78°
43°
4
81°
53°
5
85°
63°
6
80°
61°
7
75°
54°
8
78°
55°
9
82°
56°
10
83°
59°
11
81°
58°
12
84°
60°
13
82°
59°
14
79°
58°
15
79°
57°
16
78°
57°
17
80°
54°
18
74°
58°
19
74°
54°
20
72°
52°
21
79°
51°
22
71°
50°
23
71°
50°
24
73°
59°
25
77°
60°
26
79°
52°
27
72°
52°
28
73°
54°
29
73°
52°
30
74°
52°
1
75°
55°
2
74°
54°
3
76°
55°
4
80°
60°
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 71° to 85°, with overnight lows between 50° and 63°. The average high for June is 77° with an average low of 56°. 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.
