29.04
wed
wed
Day
61°F
N 9 mph
Precip.
0%
0%
Night
46°F
NW 6 mph
Precip.
0%
0%
30.04
thu
thu
Day
48°F
W 6 mph
Precip.
100%
100%
Night
45°F
SE 13 mph
Precip.
0%
0%
01.05
fri
fri
Day
54°F
E 12 mph
Precip.
0%
0%
Night
43°F
SE 9 mph
Precip.
0%
0%
02.05
sat
sat
Day
48°F
NE 7 mph
Precip.
0%
0%
Night
43°F
SE 6 mph
Precip.
0%
0%
03.05
sun
sun
Day
50°F
NE 15 mph
Precip.
0%
0%
Night
43°F
E 6 mph
Precip.
0%
0%
04.05
mon
mon
Day
54°F
NE 15 mph
Precip.
74%
74%
Night
48°F
NE 9 mph
Precip.
0%
0%
05.05
tue
tue
Day
57°F
NE 12 mph
Precip.
0%
0%
Night
54°F
NE 21 mph
Precip.
100%
100%
06.05
wed
wed
Day
54°F
NE 7 mph
Precip.
72%
72%
Night
50°F
E 2 mph
Precip.
0%
0%
07.05
thu
thu
Day
57°F
E 8 mph
Precip.
0%
0%
Night
50°F
N 8 mph
Precip.
0%
0%
08.05
fri
fri
Day
55°F
E 13 mph
Precip.
100%
100%
Night
48°F
SE 11 mph
Precip.
0%
0%
09.05
sat
sat
Day
57°F
E 8 mph
Precip.
0%
0%
Night
50°F
NE 7 mph
Precip.
0%
0%
10.05
sun
sun
Day
57°F
NW 7 mph
Precip.
0%
0%
Night
48°F
N 5 mph
Precip.
0%
0%
11.05
mon
mon
Day
61°F
NE 6 mph
Precip.
0%
0%
Night
50°F
N 5 mph
Precip.
0%
0%
12.05
tue
tue
Day
57°F
NW 9 mph
Precip.
0%
0%
Night
50°F
W 7 mph
Precip.
0%
0%
Sea water temperature in April, °F
Show year:
2026
2025
2024
The average sea water temperature in April of 2026 was 43.1°F. The highest and lowest sea temperatures during the month were 46.4°F and 39.4°F.
Sea water temperature in May, °F
Show year:
2025
2024
2023
The average sea water temperature in May of 2025 was 52.4°F. The highest and lowest sea temperatures during the month were 55.6°F and 48.0°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
Groton on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Groton
Local time: 09:19
April 29, wednesday
1200
61°F
N
9 mph
9 mph
1500
63°F
N
7 mph
7 mph
1800
54°F
NE
7 mph
7 mph
2100
48°F
N
6 mph
6 mph
April 30, thursday
0000
46°F
NW
6 mph
6 mph
0300
46°F
N
3 mph
3 mph
0600
46°F
W
3 mph
3 mph
0900
46°F
NW
3 mph
3 mph
