World Resorts USA Groton Weather

Groton 14 Days Forecast

29.10
thu
Day
61°F
NE 11 mph
Precip.
8%
Night
61°F
NE 16 mph
Precip.
13%
30.10
fri
Day
64°F
E 11 mph
Precip.
6%
Night
50°F
SE 15 mph
Precip.
10%
31.10
sat
Day
50°F
S 9 mph
Precip.
2%
Night
48°F
S 5 mph
Precip.
13%
01.11
sun
Day
54°F
NE 9 mph
Precip.
10%
Night
54°F
E 9 mph
Precip.
4%
02.11
mon
Day
59°F
E 16 mph
Precip.
10%
Night
55°F
E 8 mph
Precip.
22%
03.11
tue
Day
61°F
NE 3 mph
Precip.
21%
Night
57°F
NW 5 mph
Precip.
18%
04.11
wed
Day
61°F
N 6 mph
Precip.
18%
Night
59°F
NW 6 mph
Precip.
18%
05.11
thu
Day
63°F
NW 10 mph
Precip.
26%
Night
59°F
NW 11 mph
Precip.
26%
06.11
fri
Day
61°F
NE 4 mph
Precip.
56%
Night
55°F
S 12 mph
Precip.
73%
07.11
sat
Day
54°F
S 16 mph
Precip.
49%
Night
48°F
S 14 mph
Precip.
14%
08.11
sun
Day
52°F
S 9 mph
Precip.
3%
Night
43°F
S 9 mph
Precip.
7%
09.11
mon
Day
50°F
NW 3 mph
Precip.
2%
Night
48°F
SW 2 mph
Precip.
9%
10.11
tue
Day
54°F
W 9 mph
Precip.
27%
Night
52°F
NW 4 mph
Precip.
26%
11.11
wed
Day
57°F
SW 4 mph
Precip.
18%
Night
52°F
S 11 mph
Precip.
31%

Sea water temperature in October, °F

Show year:
2026
2025
2024

The average sea water temperature in October of 2026 was 63.2°F. The highest and lowest sea temperatures during the month were 67.3°F and 59.9°F.

Sea water temperature in November, °F

Show year:
2025
2024
2023

The average sea water temperature in November of 2025 was 55.2°F. The highest and lowest sea temperatures during the month were 60.1°F and 50.9°F.

Air temperature in Groton, °F

Precipitation total in Groton, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Groton

Sunniest months:
November 17 days
October 14 days
December 13 days
Warmest months:
July 80.4 °F
August 78.5 °F
June 74.5 °F
Warmest sea temp:
August 70.7 °F
July 69.0 °F
September 68.9 °F
Coldest months:
January 36.1 °F
February 37.4 °F
December 40.9 °F
Rainiest months:
July 3 days
November 3 days
October 3 days
Windiest months:
January 10.4 mph
December 10.2 mph
March 10.1 mph

Groton on a weather map

Groton
+61°F
NE 11 mph
Feels like: +61°F
Precip.: 8%
Places in USA:
Name
°F
+63°F
+66°F
+77°F
+66°F
+68°F
+84°F
+70°F
+64°F
+68°F
+59°F
+68°F
+82°F
+82°F
+81°F
+66°F
24 Hours Forecast
Groton
Local time: 12:37
October 29, thursday
1500
63°F
NE
13 mph
1800
61°F
NE
16 mph
2100
61°F
NE
16 mph
October 30, friday
0000
61°F
NE
16 mph
0300
61°F
NE
16 mph
0600
61°F
NE
16 mph
0900
61°F
E
14 mph
1200
64°F
E
11 mph
Units of measurement: °C / °F