S
M
T
W
T
F
S
27
59°
56°
28
57°
54°
29
66°
55°
30
71°
56°
1
74°
54°
2
84°
62°
3
70°
43°
4
66°
37°
5
69°
38°
6
61°
35°
7
66°
28°
8
72°
46°
9
68°
39°
10
65°
44°
11
67°
56°
12
68°
51°
13
65°
41°
14
54°
37°
15
55°
40°
16
57°
40°
17
57°
42°
18
58°
40°
19
62°
39°
20
60°
40°
21
63°
37°
22
54°
41°
23
54°
32°
24
53°
31°
25
53°
39°
26
61°
41°
27
59°
31°
28
50°
30°
29
50°
30°
30
51°
37°
31
56°
31°
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 50° to 72°, with overnight lows between 30° and 56°. The average high for October is 59° with an average low of 39°. 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.
