S
M
T
W
T
F
S
31
79°
61°
1
78°
60°
2
87°
62°
3
82°
63°
4
80°
59°
5
83°
61°
6
89°
56°
7
88°
70°
8
77°
63°
9
92°
64°
10
78°
53°
11
73°
53°
12
82°
53°
13
71°
51°
14
74°
43°
15
80°
45°
16
75°
43°
17
71°
56°
18
75°
50°
19
75°
50°
20
76°
44°
21
69°
54°
22
77°
49°
23
82°
56°
24
74°
51°
25
78°
57°
26
79°
65°
27
84°
69°
28
91°
71°
29
95°
65°
30
89°
63°
1
92°
65°
2
90°
66°
3
93°
65°
4
91°
65°
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 78° to 95°, with overnight lows between 57° and 71°. The average high for June is 88° with an average low of 65°. 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.
