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
83°
59°
11
76°
50°
12
81°
51°
13
85°
60°
14
95°
69°
15
85°
56°
16
79°
53°
17
79°
51°
18
76°
55°
19
77°
57°
20
78°
56°
21
80°
56°
22
79°
57°
23
80°
59°
24
83°
56°
25
76°
56°
26
78°
58°
27
73°
54°
28
74°
58°
29
73°
54°
30
72°
52°
31
73°
56°
1
75°
56°
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 72° to 95°, with overnight lows between 50° and 69°. The average high for July is 79° with an average low of 56°. 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.
