S
M
T
W
T
F
S
28
86°
71°
29
95°
65°
30
89°
62°
1
87°
65°
2
94°
69°
3
96°
68°
4
95°
67°
5
92°
66°
6
92°
64°
7
91°
64°
8
90°
63°
9
82°
60°
10
85°
65°
11
86°
66°
12
86°
65°
13
85°
65°
14
86°
66°
15
87°
66°
16
87°
65°
17
88°
66°
18
82°
64°
19
78°
61°
20
79°
65°
21
83°
66°
22
85°
67°
23
87°
65°
24
83°
65°
25
84°
66°
26
87°
67°
27
87°
67°
28
88°
66°
29
88°
65°
30
81°
65°
31
79°
64°
1
83°
66°
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 78° to 96°, with overnight lows between 60° and 71°. The average high for July is 87° with an average low of 65°. 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.
