December weather forecast
Wyandanch, NY

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Weather in December

December, the first month of the winter in Wyandanch, is still a chilly month, with an average temperature varying between 36.9°F (2.7°C) and 44.1°F (6.7°C).

Temperature

A minor decrease in the average high-temperature is observed during December, shifting from a cool 52.2°F (11.2°C) in November to a chilly 44.1°F (6.7°C). During the month of December, Wyandanch identifies an average nighttime low-temperature of 36.9°F (2.7°C), slightly lower than its daytime counterpart.

Humidity

In December, the average relative humidity is 74%.

Rainfall

In Wyandanch, during December, the rain falls for 12.3 days and regularly aggregates up to 3.78" (96mm) of precipitation. In Wyandanch, during the entire year, the rain falls for 157 days and collects up to 35.98" (914mm) of precipitation.

Snowfall

Months with snowfall in Wyandanch are January through April, October through December. In December, it is snowing for 2.4 days. Throughout December, 1.34" (34mm) of snow is accumulated. In Wyandanch, during the entire year, snow falls for 14.4 days and aggregates up to 6.06" (154mm) of snow.

Daylight

December has the shortest days of the year in Wyandanch, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 6:58 am and sunset at 4:26 pm. On the last day of December, in Wyandanch, New York, sunrise is at 7:17 am and sunset at 4:36 pm EST.

Sunshine

In Wyandanch, the average sunshine in December is 5h.

UV index

The months with the lowest UV index in Wyandanch, New York, are January through March and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 2 during December translates into the following guidance:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Around midday, solar radiation is most harmful; hence, exposure should be limited. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

Is it cold in Wyandanch during December?

The average high-temperature and low-temperature during December are 44.1°F (6.7°C) and 36.9°F (2.7°C) respectively.

What is the average humidity in December in Wyandanch?

The average relative humidity in December in Wyandanch is 74%.

How much does it rain in Wyandanch in December?

In Wyandanch, in December, it is raining for 12.3 days, with typically 3.78" (96mm) of accumulated precipitation.

How many days does it snow in December in Wyandanch?

In Wyandanch, in December, snow falls for 2.4 days, with typically accumulated 1.34" (34mm) of snow.

What is the month with the shortest days in Wyandanch?

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

How many hours of daylight does Wyandanch have in December?

In December, the average day length in Wyandanch is 9h and 19min.

When are sunrise and sunset in December in Wyandanch?

On the first day of December in Wyandanch, sunrise is at 6:58 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:36 pm EST.

How many hours of sunshine does Wyandanch have in December?

In December, the average sunshine duration in Wyandanch, New York, is 5h.

When is the lowest UV index in Wyandanch?

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

What is the UV index intensity in December in Wyandanch?

In December, the average daily maximum UV index 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
Wyandanch, NY

Average temperature in December - Wyandanch, NY
  • Average high temperature in December: 44.1°F

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in December: 36.9°F

The months with the highest average low temperature are July and August (72°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).

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Average pressure in December
Wyandanch, NY

Average pressure in December - Wyandanch, NY
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Wyandanch, NY

Average wind speed in December - Wyandanch, NY
  • Average wind speed in December: 13.1mph

The windiest month (with the highest average wind speed) is January (13.6mph).
The calmest month (with the lowest average wind speed) is July (8.9mph).

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Average humidity in December
Wyandanch, NY

Average humidity in December - Wyandanch, NY
  • Average humidity in December: 74%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is November (71%).

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Average rainfall in December
Wyandanch, NY

Average rainfall in December - Wyandanch, NY
  • Average rainfall in December: 3.78"

The wettest month (with the highest rainfall) is July (3.98").
The driest month (with the least rainfall) is January (2.2").

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Average rainfall days in December
Wyandanch, NY

Average rainfall days in December - Wyandanch, NY
  • Average rainfall days in December: 12.3 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.1 days).

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Average snowfall in December
Wyandanch, NY

Average snowfall in December - Wyandanch, NY
  • Average snowfall in December: 1.34"

The month with the highest snowfall is March (2.17").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Wyandanch, NY

Average snowfall days in December - Wyandanch, NY
  • Average snowfall days in December: 2.4 days

The month with the highest number of snowfall days is February (4.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Wyandanch, NY

Average daylight in December / Average sunshine in December - Wyandanch, NY
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 5h and 0min

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

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Average sunshine days in December
Wyandanch, NY

Average sunshine days in December - Wyandanch, NY
  • Average sunshine days in December: 16.4 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is July (11.4 days).

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Average UV index in December
Wyandanch, NY

Average UV index in December - Wyandanch, 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 and December (UV index 2).

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Average cloud cover in December
Wyandanch, NY

Average cloud cover in December - Wyandanch, NY
  • Average cloud cover in December: 48

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in December
Wyandanch, NY

Average visibility in December - Wyandanch, 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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Wyandanch, New York, USA

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