S
M
T
W
T
F
S
27
67°
60°
28
64°
57°
29
68°
56°
30
68°
55°
1
72°
54°
2
75°
63°
3
72°
53°
4
64°
48°
5
70°
51°
6
61°
38°
7
64°
35°
8
73°
46°
9
70°
42°
10
66°
42°
11
61°
45°
12
72°
53°
13
65°
53°
14
79°
50°
15
63°
48°
16
67°
49°
17
53°
32°
18
55°
37°
19
62°
47°
20
66°
46°
21
65°
47°
22
64°
49°
23
62°
48°
24
65°
48°
25
64°
47°
26
60°
47°
27
63°
42°
28
53°
37°
29
52°
38°
30
59°
45°
31
56°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Groton
Groton's October 2026 forecast shows daily high temperatures ranging from 52° to 79°, with overnight lows between 32° and 50°. The average high for October is 62° with an average low of 45°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Groton. See also: November | December | January.
