S
M
T
W
T
F
S
30
66°
43°
31
66°
43°
1
68°
48°
2
69°
52°
3
67°
54°
4
75°
54°
5
77°
51°
6
75°
44°
7
69°
43°
8
67°
43°
9
68°
41°
10
66°
46°
11
67°
47°
12
64°
42°
13
69°
48°
14
72°
48°
15
72°
46°
16
65°
47°
17
64°
48°
18
66°
47°
19
68°
40°
20
64°
42°
21
68°
38°
22
67°
36°
23
61°
37°
24
60°
37°
25
61°
40°
26
60°
36°
27
60°
36°
28
59°
38°
29
57°
34°
30
58°
34°
1
58°
38°
2
64°
33°
3
58°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in North Groton
North Groton's September 2026 forecast shows daily high temperatures ranging from 57° to 77°, with overnight lows between 33° and 54°. The average high for September is 66° with an average low of 43°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in North Groton. See also: October | November | December.
