S
M
T
W
T
F
S
28
85°
54°
29
87°
55°
30
86°
54°
1
94°
71°
2
94°
69°
3
90°
70°
4
85°
59°
5
85°
54°
6
85°
57°
7
81°
60°
8
88°
54°
9
87°
61°
10
76°
52°
11
79°
50°
12
81°
53°
13
85°
57°
14
95°
69°
15
85°
56°
16
78°
55°
17
79°
54°
18
78°
56°
19
76°
58°
20
80°
58°
21
75°
56°
22
77°
57°
23
78°
55°
24
78°
56°
25
76°
56°
26
78°
58°
27
80°
59°
28
74°
59°
29
75°
58°
30
79°
59°
31
77°
58°
1
74°
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 74° to 95°, with overnight lows between 50° and 69°. The average high for July is 79° with an average low of 57°. 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.
