Measurements:
°C
°F
CURRENT WEATHER
23:49
Groton
60°F
SE 12 mph
Feels like: 60°F
Precip: 17%
World Resorts USA Groton Weather

7 Day Weather Forecast

10.26
mon
DAY
60°F
E 14 mph
precip
3%
NIGHT
60°F
SE 12 mph
precip
17%
10.27
tue
DAY
54°F
SW 6 mph
precip
3%
NIGHT
52°F
NW 2 mph
precip
8%
10.28
wed
DAY
56°F
N 6 mph
precip
16%
NIGHT
58°F
NE 11 mph
precip
18%
10.29
thu
DAY
60°F
NE 12 mph
precip
8%
NIGHT
60°F
NE 15 mph
precip
13%
10.30
fri
DAY
64°F
E 9 mph
precip
12%
NIGHT
54°F
S 14 mph
precip
15%
10.31
sat
DAY
54°F
S 9 mph
precip
5%
NIGHT
50°F
N 2 mph
precip
19%
11.01
sun
DAY
58°F
N 7 mph
precip
16%
NIGHT
60°F
N 11 mph
precip
24%

Groton Sea Water Temperature in October, °F

Select Year: 2026 2025 2024

The average sea surface temperature in October 2026 for Groton was 17.5°F. The maximum and minimum values were 15.6°F and 19.6°F respectively.

Groton on the Weather Map

Best Time to Visit Groton
The most sunny months:
November 17 days
October 14 days
December 13 days
The most warm months:
July 83.8 °F
August 81.6 °F
June 77.2 °F
Warmest sea temperature:
August 73.0 °F
July 71.1 °F
September 71.0 °F
The most cold months:
January 34.6 °F
February 36.0 °F
December 39.9 °F
The most rainy months:
July 3 days
November 3 days
October 3 days
The most windy months:
January 10 mph
December 10 mph
March 10 mph
more details