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Groton Weather Forecast

Temperature, wind, rain and more for Groton

Connecticut, United States Of America

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityCloud AmountPrecip AmountWeather
Sat 13
Dec		16:00

WSW
WSW

 16 / 18 mph 41 / 33°F 73%
Low level cloud: 43%
Mid level cloud: 44%
High level cloud: 20%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

 15 / 20 mph 39 / 30°F 72%
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WSW
WSW

 14 / 21 mph 36 / 27°F 77%
Low level cloud: 51%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
97%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 14
Dec		01:00

WSW
WSW

 8 / 11 mph 35 / 28°F 98%
Low level cloud: 92%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

WNW
WNW

 5 / 6 mph 34 / 30°F 99%
Low level cloud: 93%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
07:00

NNW
NNW

 12 / 15 mph 31 / 22°F 94%
Low level cloud: 64%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
10:00

NNW
NNW

 13 / 15 mph 29 / 19°F 86%
Low level cloud: 67%
Mid level cloud: 43%
High level cloud: 1%
Most Significant Cloud Type: low
82%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
13:00

NW
NW

 15 / 17 mph 31 / 20°F 60%
Low level cloud: 15%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NW
NW

 17 / 23 mph 27 / 15°F 62%
Low level cloud: 5%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

 18 / 23 mph 24 / 10°F 72%
Low level cloud: 74%
Mid level cloud: 59%
High level cloud: 0%
Most Significant Cloud Type: low
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NW
NW

 19 / 24 mph 22 / 7°F 72%
Low level cloud: 17%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
The 7 day weather forecast summary for Groton:

The forecast for Groton in the coming week is predicting the average daytime maximum temperature will be around 6°C, with a high for the week of 12°C expected on the morning of Friday 19th. The mean minimum temperature will be -3°C, dipping to its lowest on the morning of Monday 15th at -8°C. Expect the next week to have mixed overhead conditions with some days dry and some seeing a significant amount of rain or snow. It looks like Friday 15th will have the most precipitation with an accumulation of around 14.0mm. On the whole winds are likely to be fresh. The strongest wind will be felt on Friday morning, coming from a south westerly direction, and reaching around 26mph.

The day label given represents the local day relative to the local time for the location you are looking at.
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Day

This time is corrected for local time zones and where possible for daylight saving times.
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Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
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Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
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Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
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Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
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Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
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Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
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Cloud Amount

Here we try to capture the feel of the weather as an image – it will never be perfect but is useful for a quick overview.
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Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
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Pressure