S
M
T
W
T
F
S
28
83°
63°
29
90°
61°
30
87°
52°
1
88°
61°
2
88°
63°
3
84°
65°
4
85°
63°
5
86°
68°
6
89°
67°
7
90°
67°
8
86°
65°
9
89°
66°
10
87°
65°
11
89°
64°
12
86°
64°
13
88°
65°
14
83°
60°
15
85°
65°
16
86°
64°
17
81°
65°
18
82°
66°
19
86°
66°
20
87°
65°
21
88°
67°
22
88°
66°
23
86°
66°
24
84°
65°
25
85°
66°
26
84°
66°
27
86°
65°
28
86°
66°
29
83°
64°
30
81°
65°
31
78°
61°
1
79°
60°
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 90°, with overnight lows between 60° and 68°. The average high for July is 85° 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.
