December weather forecastGlen Cove, NY

December

Weather in December

December rings in the winter season in Glen Cove with temperatures plunging from 34.7°F (1.5°C) to 42.4°F (5.8°C). Measurable snowfall coincides with increased rainfall, marking a moist weather pattern. This month receives the lowest amount of daylight and sunshine, creating a need for more indoor coziness. Elevated wind speeds compared to November add to the frigid climatic conditions.

Temperature

In Glen Cove, the average high-temperature in December slightly decreases from a fresh 51.1°F (10.6°C) in November to an icy 42.4°F (5.8°C). Nighttime temperature reflects an average dip to a still wintry 34.7°F (1.5°C) in December, subtly cooler than its daytime highs.

Humidity

February, May and December, with an average relative humidity of 75%, are the most humid months.

Rainfall

The month with the most rainfall in Glen Cove, New York, is December, when the rain falls for 12.9 days and typically aggregates up to 4.06" (103mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Glen Cove. In December, in Glen Cove, it is snowing for 3.5 days. Throughout December, 1.54" (39mm) of snow is accumulated. Throughout the year, there are 22.2 snowfall days, and 7.24" (184mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of December in Glen Cove, sunrise is at 7:00 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:36 pm EST.

Sunshine

In December, the average sunshine is 4.9h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Glen Cove. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In December, the maximum UV index of 2 suggests this advice:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

December temperatures in Glen Cove, New York, vary between a high-temperature of 42.4°F (5.8°C) and a low-temperature of 34.7°F (1.5°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is evaluated at 86°F (30°C).

The months with the highest humidity are February, May and December, with an average relative humidity of 75%.

The average relative humidity in December in Glen Cove is 75%.

The month with the most rainfall in Glen Cove is December, when the rain falls for 12.9 days and typically aggregates up to 4.06" (103mm) of precipitation.

In December, in Glen Cove, New York, the rain falls for 12.9 days. Throughout December, 4.06" (103mm) of precipitation is accumulated.

In Glen Cove, New York, in December, during 3.5 snowfall days, 1.54" (39mm) of snow is typically accumulated.

December has the shortest days of the year, with an average of 9h and 18min of daylight.

The average day length in December in Glen Cove, New York, is 9h and 18min.

On the first day of December in Glen Cove, New York, sunrise is at 7:00 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:36 pm EST.

The average sunshine duration in December in Glen Cove, New York, is 4.9h.

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

In December, the average daily maximum UV index in Glen Cove, New York, is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Glen Cove, NY

  • Average high temperature in December: 42.4°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in December: 34.7°F

The months with the highest average low temperature are July and August (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

Average pressure in December
Glen Cove, NY

  • Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Glen Cove, NY

  • Average wind speed in December: 10.8mph

The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).

Average humidity in December
Glen Cove, NY

  • Average humidity in December: 75%

The months with the highest relative humidity are February, May and December (75%).
The months with the lowest relative humidity are August and November (71%).

Average rainfall in December
Glen Cove, NY

  • Average rainfall in December: 4.06"

The wettest month (with the highest rainfall) is December (4.06").
The driest month (with the least rainfall) is September (2.4").

Average rainfall days in December
Glen Cove, NY

  • Average rainfall days in December: 12.9 days

The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in December
Glen Cove, NY

  • Average snowfall in December: 1.54"

The month with the highest snowfall is March (2.01").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Glen Cove, NY

  • Average snowfall days in December: 3.5 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Glen Cove, NY

  • Average daylight in December: 9h and 18min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 54min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Glen Cove, NY

  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (10.6 days).

Average UV index in December
Glen Cove, NY

  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Glen Cove, NY

  • Average cloud cover in December: 47

The months with the most cloud cover are February and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 29).

Average visibility in December
Glen Cove, NY

  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).