S
M
T
W
T
F
S
28
76°
65°
29
83°
61°
30
80°
62°
1
83°
67°
2
90°
69°
3
92°
71°
4
89°
71°
5
79°
68°
6
68°
62°
7
71°
61°
8
80°
65°
9
82°
70°
10
85°
68°
11
84°
61°
12
79°
65°
13
80°
66°
14
84°
65°
15
80°
66°
16
81°
66°
17
80°
66°
18
79°
65°
19
78°
64°
20
77°
65°
21
76°
64°
22
76°
63°
23
77°
64°
24
78°
63°
25
78°
65°
26
80°
67°
27
80°
69°
28
83°
69°
29
83°
68°
30
82°
69°
31
81°
69°
1
81°
68°
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 71° to 85°, with overnight lows between 61° and 70°. The average high for July is 80° with an average low of 66°. 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.
