S
M
T
W
T
F
S
31
67°
35°
1
66°
43°
2
75°
40°
3
84°
54°
4
91°
58°
5
90°
61°
6
93°
66°
7
80°
55°
8
71°
50°
9
77°
54°
10
82°
59°
11
83°
60°
12
83°
58°
13
88°
59°
14
81°
58°
15
78°
57°
16
79°
58°
17
80°
57°
18
76°
59°
19
81°
59°
20
78°
56°
21
80°
55°
22
75°
53°
23
74°
53°
24
76°
60°
25
76°
62°
26
83°
57°
27
77°
54°
28
76°
56°
29
77°
55°
30
78°
56°
1
77°
57°
2
78°
56°
3
83°
62°
4
85°
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 71° to 93°, with overnight lows between 50° and 66°. The average high for June is 80° with an average low of 58°. 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.
