S
M
T
W
T
F
S
31
79°
61°
1
78°
60°
2
87°
62°
3
82°
63°
4
80°
61°
5
80°
59°
6
88°
67°
7
90°
67°
8
80°
63°
9
85°
67°
10
93°
68°
11
91°
63°
12
83°
58°
13
78°
54°
14
75°
55°
15
75°
52°
16
71°
52°
17
78°
56°
18
73°
57°
19
79°
61°
20
83°
57°
21
75°
52°
22
76°
62°
23
84°
64°
24
82°
61°
25
75°
56°
26
74°
58°
27
75°
63°
28
78°
63°
29
82°
62°
30
78°
63°
1
80°
63°
2
83°
64°
3
85°
65°
4
86°
66°
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 93°, with overnight lows between 52° and 68°. The average high for June is 80° 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 Groton. See also: July | August | September.
