December weather forecast
Deer Park, NY

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Weather in December

The first month of the winter, December, is still a chilly month in Deer Park, New York, with temperature in the range of an average high of 44.1°F (6.7°C) and an average low of 36.9°F (2.7°C).

Temperature

The beginning of December brings a slight decrease in the average high-temperature, transitioning from a fresh 52.2°F (11.2°C) in November to a chilly 44.1°F (6.7°C). Deer Park observes an average low-temperature of 36.9°F (2.7°C) during the slightly cooler nights of December.

Humidity

In Deer Park, New York, the average relative humidity in December is 74%.

Rainfall

In Deer Park, in December, during 12.3 rainfall days, 3.78" (96mm) of precipitation is typically accumulated. Throughout the year, in Deer Park, there are 157 rainfall days, and 35.98" (914mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. In Deer Park, in December, during 2.4 snowfall days, 1.34" (34mm) of snow is typically accumulated. Throughout the year, in Deer Park, there are 14.4 snowfall days, and 6.06" (154mm) of snow is accumulated.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year in Deer Park, New York.
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 Deer Park, sunrise is at 7:17 am and sunset at 4:35 pm EST.

Sunshine

In Deer Park, the average sunshine in December is 5h.

UV index

The months with the lowest UV index are January through March and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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Frequently asked questions

Is December cold in Deer Park?

The high-temperature during December is 44.1°F (6.7°C) and the low-temperature is 36.9°F (2.7°C).

What is the average humidity in December in Deer Park?

In Deer Park, New York, the average relative humidity in December is 74%.

How many days does it rain in December in Deer Park?

In Deer Park, during December, the rain falls for 12.3 days and regularly aggregates up to 3.78" (96mm) of precipitation.

How many days does it snow in December in Deer Park?

In Deer Park, New York, in December, during 2.4 snowfall days, 1.34" (34mm) of snow is typically accumulated.

What is the month with the shortest days in Deer Park?

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

How many hours of daylight does Deer Park have in December?

In Deer Park, New York, the average day length in December is 9h and 19min.

When is the sunrise / sunset in December in Deer Park?

On the first day of December in Deer Park, New York, 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 4:35 pm EST.

How long on average sun shines in December in Deer Park?

In Deer Park, the average sunshine duration in December is 5h.

When is the lowest UV index in Deer Park?

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

How high is the UV index in December in Deer Park?

In December, the average daily maximum UV index in Deer Park is 2. A UV Index value of 2, and less, symbolizes a low health risk 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
Deer Park, NY

Average temperature in December - Deer Park, 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
Deer Park, NY

Average pressure in December - Deer Park, 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
Deer Park, NY

Average wind speed in December - Deer Park, 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
Deer Park, NY

Average humidity in December - Deer Park, 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
Deer Park, NY

Average rainfall in December - Deer Park, 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
Deer Park, NY

Average rainfall days in December - Deer Park, 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
Deer Park, NY

Average snowfall in December - Deer Park, 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
Deer Park, NY

Average snowfall days in December - Deer Park, 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
Deer Park, NY

Average daylight in December / Average sunshine in December - Deer Park, 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
Deer Park, NY

Average sunshine days in December - Deer Park, 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
Deer Park, NY

Average UV index in December - Deer Park, 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
Deer Park, NY

Average cloud cover in December - Deer Park, 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
Deer Park, NY

Average visibility in December - Deer Park, 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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Deer Park, New York, USA

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