Weather in Groton in Summer
| June | July | August | ||||
| Average day temperature: | ||||||
| Average day temperature: | 73.5°F | 80.6°F | 79.3°F | |||
| Average night temperature: | ||||||
| Average night temperature: | 60.7°F | 68.3°F | 67.4°F | |||
| Sea water temperature: | ||||||
| Sea water temperature: | 60.8°F | 69.0°F | 70.8°F | |||
| Number of sunny days: | ||||||
| Number of sunny days: | 10 days | 11 days | 9 days | |||
| Day length: | ||||||
| Day length: | 15.0 - 15.2 h. | 14.4 - 15.1 h. | 13.2 - 14.4 h. | |||
| Number of rainy days: | ||||||
| Number of rainy days: | 3 days | 4 days | 3 days | |||
| Precipitation totals: | ||||||
| Precipitation totals: | 1.3 in. | 1.7 in. | 1.3 in. | |||
Day & Night air temperature, °F
Sea water temperature, °F
Precipitation total, in.
Sunny, partly cloudy and cloudy days
Wind speed, mph
Average sunny hours
Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.
Best time for vacation in Groton
Groton on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Groton
Local time: 00:32
May 19, sunday
0300
54°F
S
12 mph
12 mph
0600
54°F
SW
11 mph
11 mph
0900
57°F
S
12 mph
12 mph
1200
59°F
SW
14 mph
14 mph
1500
57°F
SW
13 mph
13 mph
1800
57°F
SW
12 mph
12 mph
2100
55°F
SW
9 mph
9 mph
May 20, monday
0000
54°F
SW
9 mph
9 mph
