December weather forecast
New Windsor, NY

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Weather in December

The first month of the winter, December, is also a wintry month in New Windsor, New York, with an average temperature fluctuating between 26.8°F (-2.9°C) and 38.5°F (3.6°C).

Temperature

The onset of December brings a small change in high-temperatures, falling from a chilly 48.4°F (9.1°C) in November to a cold 38.5°F (3.6°C). The average temperature during December nights is registered at a subzero cold 26.8°F (-2.9°C).

Humidity

February, October and December, with an average relative humidity of 81%, are the most humid months in New Windsor.

Rainfall

In New Windsor, New York, in December, it is raining for 8.7 days, with typically 2.52" (64mm) of accumulated precipitation. Throughout the year, there are 135.6 rainfall days, and 25.39" (645mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In New Windsor, New York, during December, snow falls for 4.8 days and regularly aggregates up to 3.03" (77mm) of snow. Throughout the year, there are 27.2 snowfall days, and 17.2" (437mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 12min of daylight.
On the first day of the month, sunrise is at 7:03 am and sunset at 4:27 pm. On the last day of December, in New Windsor, sunrise is at 7:22 am and sunset at 4:36 pm EST.

Sunshine

In New Windsor, the average sunshine in December is 4.6h.

UV index

The months with the lowest UV index 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 minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index, 2 during December, leads to the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Stay sun-safe with clothing that is both closely woven and worn loosely. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

How cold is December in New Windsor?

New Windsor in December has an average high-temperature of 38.5°F (3.6°C) and an average low-temperature of 26.8°F (-2.9°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in August is estimated at 87.8°F (31°C).

What is the most humid month in New Windsor?

The months with the highest humidity in New Windsor, New York, are February, October and December, with an average relative humidity of 81%.

What is the average humidity in December in New Windsor?

In December, the average relative humidity is 81%.

How much does it rain in New Windsor in December?

In New Windsor, New York, in December, it is raining for 8.7 days, with typically 2.52" (64mm) of accumulated precipitation.

How much does it snow in New Windsor in December?

In New Windsor, in December, during 4.8 snowfall days, 3.03" (77mm) of snow is typically accumulated.

What is the month with the shortest days in New Windsor?

December has the shortest days of the year in New Windsor, with an average of 9h and 12min of daylight.

How many hours of daylight does New Windsor have in December?

In December, the average day length is 9h and 14min.

When is the sunrise / sunset in December in New Windsor?

In December, on the first day of the month, sunrise is at 7:03 am and sunset at 4:27 pm. On the last day of the month, in New Windsor, New York, sunrise is at 7:22 am and sunset at 4:36 pm EST.

How many hours of sunshine does New Windsor have in December?

In New Windsor, New York, the average sunshine duration in December is 4.6h.

What are the months with the lowest UV index in New Windsor?

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

What is the UV index reading in December in New Windsor?

In December, the average daily maximum UV index in New Windsor, New York, is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
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
New Windsor, NY

Average temperature in December - New Windsor, NY
  • Average high temperature in December: 38.5°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (32.9°F).

  • Average low temperature in December: 26.8°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

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Average pressure in December
New Windsor, NY

Average pressure in December - New Windsor, 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
New Windsor, NY

Average wind speed in December - New Windsor, NY
  • Average wind speed in December: 6mph

The windiest months (with the highest average wind speed) are February and March (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in December
New Windsor, NY

Average humidity in December - New Windsor, NY
  • Average humidity in December: 81%

The months with the highest relative humidity are February, October and December (81%).
The month with the lowest relative humidity is April (74%).

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Average rainfall in December
New Windsor, NY

Average rainfall in December - New Windsor, NY
  • Average rainfall in December: 2.52"

The wettest month (with the highest rainfall) is October (2.64").
The driest months (with the least rainfall) are January and September (1.54").

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Average rainfall days in December
New Windsor, NY

Average rainfall days in December - New Windsor, NY
  • Average rainfall days in December: 8.7 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (5.6 days).

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Average snowfall in December
New Windsor, NY

Average snowfall in December - New Windsor, NY
  • Average snowfall in December: 3.03"

The month with the highest snowfall is January (4.37").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
New Windsor, NY

Average snowfall days in December - New Windsor, NY
  • Average snowfall days in December: 4.8 days

The month with the highest number of snowfall days is February (6.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
New Windsor, NY

Average daylight in December / Average sunshine in December - New Windsor, NY
  • Average daylight in December: 9h and 1min

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 12min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days in December
New Windsor, NY

Average sunshine days in December - New Windsor, NY
  • Average sunshine days in December: 18.7 days

The month with the most sunshine days is January (20.6 days).
The months with the least sunshine days are May and June (13.5 days).

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Average UV index in December
New Windsor, NY

Average UV index in December - New Windsor, NY
  • Average UV index in December: 2

The months with the highest UV index are June 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
New Windsor, NY

Average cloud cover in December - New Windsor, NY
  • Average cloud cover in December: 51

The months with the most cloud cover are February, March and December (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 37).

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Average visibility in December
New Windsor, NY

Average visibility in December - New Windsor, NY
  • Average visibility in December: 5mi

The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).

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New Windsor, New York, USA

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