S
M
T
W
T
F
S
31
63°
38°
1
69°
45°
2
74°
40°
3
84°
43°
4
87°
48°
5
86°
54°
6
74°
59°
7
69°
49°
8
81°
44°
9
86°
48°
10
86°
55°
11
87°
69°
12
91°
69°
13
84°
59°
14
79°
55°
15
74°
55°
16
76°
52°
17
79°
49°
18
68°
60°
19
67°
56°
20
67°
55°
21
68°
52°
22
68°
53°
23
73°
53°
24
74°
52°
25
73°
56°
26
70°
55°
27
73°
52°
28
76°
58°
29
74°
57°
30
76°
58°
1
77°
57°
2
76°
54°
3
71°
57°
4
72°
53°
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 67° to 77°, with overnight lows between 52° and 58°. The average high for June is 72° with an average low of 55°. 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.
