S
M
T
W
T
F
S
28
81°
55°
29
82°
58°
30
85°
59°
1
85°
60°
2
81°
60°
3
77°
59°
4
80°
58°
5
79°
57°
6
74°
53°
7
74°
54°
8
76°
57°
9
77°
60°
10
74°
58°
11
75°
59°
12
75°
61°
13
76°
61°
14
75°
60°
15
77°
61°
16
75°
60°
17
76°
60°
18
76°
61°
19
75°
59°
20
77°
60°
21
80°
61°
22
76°
60°
23
76°
60°
24
77°
59°
25
77°
60°
26
79°
61°
27
82°
62°
28
82°
61°
29
77°
61°
30
79°
60°
31
82°
62°
1
82°
61°
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 74° to 85°, with overnight lows between 53° and 62°. The average high for July is 78° 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 July weather will actually feel in Groton. See also: August | September | October.
