Weather in Groton in Autumn
| September | October | November | ||||
| Average day temperature: | 71.6°F | 62.2°F | 51.6°F | |||
| Average night temperature: | 60.8°F | 52.4°F | 42.8°F | |||
| Sea water temperature: | 68.8°F | 63.8°F | 57.2°F | |||
| Number of sunny days: | 14 days | 13 days | 16 days | |||
| Day length: | 11.8 - 13.1 h. | 10.4 - 11.7 h. | 9.4 - 10.4 h. | |||
| Number of rainy days: | 3 days | 3 days | 3 days | |||
| Precipitation totals: | 1.3 in. | 1.4 in. | 1.1 in. | |||
Day & Night air temperature, °F
September
October
November
0
12
24
36
48
60
72
84
96
51.6
62.2
71.6
42.8
52.4
60.8
| Day temperature | Night temperature |
Sea water temperature, °F
September
October
November
0
11
22
33
44
55
66
77
88
57.2
63.8
68.8
Precipitation total, in.
September
October
November
0.0
0.2
0.5
0.7
1.0
1.2
1.4
1.7
1.1
1.4
1.3
Sunny, partly cloudy and cloudy days
September
October
November
0
5
10
15
20
25
30
35
7
11
8
7
8
8
16
13
14
| Cloudy days | Partly cloudy days | Sunny days |
Wind speed, mph
September
October
November
0.0
1.5
3.1
4.6
6.2
7.7
9.3
10.8
9
7.7
7.6
Average sunny hours
September
October
November
0
1
2
3
4
5
6
7
8
6.6
6.4
7.3
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
Leaflet | Tiles © Esri
Places in USA:
Name
°F
24 Hours Forecast
Groton
Local time: 00:02
April 07, monday
0300
41°F
S
6 mph
6 mph
0600
39°F
S
6 mph
6 mph
0900
37°F
SW
11 mph
11 mph
1200
37°F
W
9 mph
9 mph
1500
39°F
SW
8 mph
8 mph
1800
37°F
SW
4 mph
4 mph
2100
37°F
SW
4 mph
4 mph
April 08, tuesday
0000
36°F
SE
3 mph
3 mph
