Weather in Groton: December
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Average day temperature: | 42.2°F |
| Average night temperature: | 36.5°F | |
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Sea water temperature: | 49.0°F |
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Number of sunny days: | 11 days |
| Day length: | 9.2 - 9.4 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.8 in. | |
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forecast
| Groton |
temperature
| Groton |
Air temperature in December, °F
The highest day temperature during December of 2023 was 56°F. At the same time the lowest night temperature was 26°F. Day and night temperature averages during December were 44.3°F and 40.1°F.
Sea water temperature in Groton in December, °F
The average sea water temperature in December of 2023 was 48.5°F. The highest and lowest sea temperatures during the month were 51.6°F and 45.5°F.
Number of sunny, partly cloudy and cloudy days in December is almost equal.
Precipitation total in December, in.
Precipitation total value in Groton in December is 1.8 in. Other months of the year show relatively similar values.
The average wind speed value in December is 9.2 mph It makes December one of the most windy months of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 4.8.
Best time for vacation in Groton
Groton on a weather map
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