Weather in Groton in Autumn
| September | October | November | ||||
| Average day temperature: | ||||||
| Average day temperature: | 71.8°F | 62.2°F | 51.4°F | |||
| Average night temperature: | ||||||
| Average night temperature: | 60.6°F | 51.9°F | 42.0°F | |||
| Sea water temperature: | ||||||
| Sea water temperature: | 68.9°F | 64.0°F | 56.8°F | |||
| Number of sunny days: | ||||||
| Number of sunny days: | 13 days | 14 days | 17 days | |||
| Day length: | ||||||
| Day length: | 11.8 - 13.1 h. | 10.4 - 11.7 h. | 9.4 - 10.4 h. | |||
| Number of rainy days: | ||||||
| Number of rainy days: | 2 days | 3 days | 3 days | |||
| Precipitation totals: | ||||||
| Precipitation totals: | 1.1 in. | 1.4 in. | 1.1 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: 06:11
September 19, saturday
0900
57°F
SW
12 mph
12 mph
1200
63°F
W
7 mph
7 mph
1500
63°F
NW
10 mph
10 mph
1800
63°F
NW
9 mph
9 mph
2100
63°F
NW
11 mph
11 mph
September 20, sunday
0000
61°F
NW
11 mph
11 mph
0300
61°F
NW
9 mph
9 mph
0600
61°F
NW
10 mph
10 mph
