December weather forecast
Glen Head, NY

Weather in December

The first month of the winter, December, is still a cold month in Glen Head, New York, with temperature in the range of an average high of 42.4°F (5.8°C) and an average low of 34.7°F (1.5°C).

Temperature

In December, the average high-temperature slightly decreases from a cool 51.1°F (10.6°C) in November to a cold 42.4°F (5.8°C). The average low-temperature, is 34.7°F (1.5°C).

Humidity

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

Rainfall

December is the month with the most rainfall. Rain falls for 12.9 days and accumulates 4.06" (103mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Glen Head. In Glen Head, snow falls for 3.5 days, with typically accumulated 1.54" (39mm) of snow. In Glen Head, during the entire year, snow falls for 22.2 days and aggregates up to 7.24" (184mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 6:59 am and sunset at 4:27 pm. On the last day of December, in Glen Head, sunrise is at 7:18 am and sunset at 4:36 pm EST.

Sunshine

In Glen Head, New York, the average sunshine in December is 4.9h.

UV index

The months with the lowest UV index in Glen Head are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 2 in December transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Glen Head?

In December, the average high-temperature is 42.4°F (5.8°C), and the average low-temperature is 34.7°F (1.5°C). in July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, is calculated to be 86°F (30°C).

What are the most humid months in Glen Head?

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

What is the average humidity in December in Glen Head?

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

What is the wettest month in Glen Head?

December is the month with the most rainfall. Rain falls for 12.9 days and accumulates 4.06" (103mm) of precipitation.

How much does it rain in Glen Head in December?

In Glen Head, New York, in December, during 12.9 rainfall days, 4.06" (103mm) of precipitation is typically accumulated.

How much does it snow in Glen Head in December?

In December, in Glen Head, it is snowing for 3.5 days. Throughout December, 1.54" (39mm) of snow is accumulated.

What is the month with the shortest days in Glen Head?

The month with the shortest days in Glen Head, New York, is December, with an average of 9h and 18min of daylight.

How many hours of daylight does Glen Head have in December?

In December, the average day length in Glen Head, New York, is 9h and 18min.

What time are sunrise and sunset in December in Glen Head?

On the first day of December in Glen Head, New York, sunrise is at 6:59 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.

How many hours of sunshine does Glen Head have in December?

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

What are the months with the lowest UV index in Glen Head?

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

What is the UV index reading in December in Glen Head?

The average daily maximum UV index in December in Glen Head is 2. A UV Index value of 2, and less, symbolizes a low health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Glen Head, NY

Average temperature in December - Glen Head, 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).

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Average pressure in December
Glen Head, NY

Average pressure in December - Glen Head, 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).

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Average wind speed in December
Glen Head, NY

Average wind speed in December - Glen Head, 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).

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Average humidity in December
Glen Head, NY

Average humidity in December - Glen Head, 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%).

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Average rainfall in December
Glen Head, NY

Average rainfall in December - Glen Head, 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").

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Average rainfall days in December
Glen Head, NY

Average rainfall days in December - Glen Head, 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).

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Average snowfall in December
Glen Head, NY

Average snowfall in December - Glen Head, 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").

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Average snowfall days in December
Glen Head, NY

Average snowfall days in December - Glen Head, 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).

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

Average daylight in December / Average sunshine in December - Glen Head, NY
  • Average daylight in December: 9h and 18min

The month with the longest days is June (Average daylight: 15h and 4min).
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).

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Average sunshine days in December
Glen Head, NY

Average sunshine days in December - Glen Head, 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).

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Average UV index in December
Glen Head, NY

Average UV index in December - Glen Head, 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).

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Average cloud cover in December
Glen Head, NY

Average cloud cover in December - Glen Head, 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).

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Average visibility in December
Glen Head, NY

Average visibility in December - Glen Head, 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).

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