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
69°
58°
20
72°
57°
21
76°
56°
22
73°
55°
23
78°
58°
24
78°
54°
25
80°
55°
26
73°
60°
27
81°
57°
28
85°
54°
29
87°
55°
30
86°
54°
1
94°
71°
2
95°
69°
3
92°
66°
4
84°
57°
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 84° to 95°, with overnight lows between 57° and 69°. The average high for June is 90° with an average low of 64°. 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.
