S
M
T
W
T
F
S
27
66°
54°
28
70°
57°
29
73°
58°
30
73°
57°
1
72°
57°
2
71°
56°
3
72°
57°
4
71°
56°
5
71°
57°
6
72°
56°
7
71°
55°
8
69°
56°
9
68°
52°
10
70°
53°
11
65°
53°
12
64°
52°
13
63°
50°
14
64°
49°
15
59°
52°
16
64°
50°
17
66°
51°
18
67°
50°
19
66°
49°
20
66°
51°
21
67°
49°
22
68°
49°
23
66°
45°
24
66°
43°
25
63°
49°
26
60°
49°
27
66°
46°
28
64°
40°
29
62°
40°
30
54°
38°
31
54°
40°
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 54° to 73°, with overnight lows between 38° and 58°. The average high for October is 66° with an average low of 51°. 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.
