Weather in Groton: February
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Average day temperature: | 38.0°F |
Average night temperature: | 30.8°F | |
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Sea water temperature: | 40.0°F |
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Number of sunny days: | 9 days |
Day length: | 10.1 - 11.3 hours | |
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Number of rainy days: | 2 days |
Precipitation totals: | 1.0 in. | |
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forecast
Groton |
temperature
Groton |
Air temperature in February, °F
Day temperature | Night temperature |
The highest day temperature during February of 2025 was 51°F. At the same time the lowest night temperature was 16°F. Daily and nightly averages during February were 36.2°F and 29.0°F.
Sea water temperature in Groton in February, °F
The average sea water temperature in February of 2025 was 37.7°F. The highest and lowest sea temperatures during the month were 39.2°F and 36.1°F.
Sunny days | |
Partly cloudy days | |
Cloudy days |
Number of sunny, partly cloudy and cloudy days in February is almost equal.
Precipitation total in February, in.
Precipitation total value in Groton in February is 1.0 in. Other months of the year show relatively similar values.
The average wind speed value in February is 9.6 mph It makes February 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 February is: 5.4.
Best time for vacation in Groton
Groton on a weather map

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