S
M
T
W
T
F
S
28
79°
58°
29
87°
61°
30
91°
69°
1
97°
73°
2
99°
70°
3
93°
68°
4
82°
62°
5
77°
61°
6
78°
62°
7
79°
61°
8
83°
62°
9
84°
63°
10
89°
60°
11
79°
64°
12
79°
63°
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 99°, with overnight lows between 57° and 73°. The average high for July is 84° with an average low of 63°. 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.
