S
M
T
W
T
F
S
31
67°
35°
1
66°
43°
2
75°
40°
3
84°
54°
4
88°
56°
5
89°
51°
6
86°
56°
7
78°
55°
8
80°
47°
9
86°
48°
10
90°
56°
11
92°
68°
12
92°
67°
13
88°
63°
14
89°
55°
15
79°
60°
16
77°
51°
17
82°
47°
18
79°
59°
19
78°
63°
20
77°
56°
21
80°
55°
22
74°
62°
23
77°
57°
24
82°
58°
25
79°
57°
26
75°
58°
27
79°
58°
28
77°
58°
29
82°
61°
30
82°
63°
1
83°
64°
2
83°
62°
3
84°
59°
4
78°
59°
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 74° to 84°, with overnight lows between 55° and 64°. The average high for June is 79° 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.
