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