S
M
T
W
T
F
S
28
85°
61°
29
89°
59°
30
90°
70°
1
98°
76°
2
100°
78°
3
99°
72°
4
94°
69°
5
89°
63°
6
81°
62°
7
78°
61°
8
79°
62°
9
86°
63°
10
88°
65°
11
89°
64°
12
87°
61°
13
79°
58°
14
77°
57°
15
77°
57°
16
78°
58°
17
79°
60°
18
80°
60°
19
81°
64°
20
83°
64°
21
84°
65°
22
86°
65°
23
85°
64°
24
85°
65°
25
86°
65°
26
87°
66°
27
87°
66°
28
86°
65°
29
86°
65°
30
85°
63°
31
79°
60°
1
78°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Groton
Groton's July 2026 forecast shows daily high temperatures ranging from 77° to 100°, with overnight lows between 57° and 78°. The average high for July is 85° 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 July weather will actually feel in Groton. See also: August | September | October.
