December weather forecast
Yorktown, NY

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Weather in December

The first month of the winter, December, is still a cold month in Yorktown, New York, with temperature in the range of an average high of 39.9°F (4.4°C) and an average low of 28.8°F (-1.8°C).

Temperature

The beginning of December involves a decrease in the average high-temperature, transitioning from a frosty 49.5°F (9.7°C) in November to an icy 39.9°F (4.4°C). An average temperature of 28.8°F (-1.8°C) marks the nights in December.

Humidity

February, October and December, with an average relative humidity of 79%, are the most humid months in Yorktown.

Rainfall

In December, in Yorktown, the rain falls for 9.5 days. Throughout December, 3.11" (79mm) of precipitation is accumulated. In Yorktown, New York, during the entire year, the rain falls for 148.4 days and collects up to 30.55" (776mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Yorktown, in December, during 4.7 snowfall days, 2.32" (59mm) of snow is typically accumulated. Throughout the year, in Yorktown, there are 24.4 snowfall days, and 12.87" (327mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Yorktown, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:02 am and sunset at 4:26 pm. On the last day of December, sunrise is at 7:20 am and sunset at 4:36 pm EST.

Sunshine

In December, the average sunshine in Yorktown is 4.9h.

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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

How cold is it in Yorktown in December?

Yorktown in December has an average high-temperature of 39.9°F (4.4°C) and an average low-temperature of 28.8°F (-1.8°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is computed to be 87.8°F (31°C).

What are the most humid months in Yorktown?

The months with the highest humidity are February, October and December, with an average relative humidity of 79%.

What is the average humidity in December in Yorktown?

In December, the average relative humidity is 79%.

How much does it rain in Yorktown in December?

In Yorktown, during December, the rain falls for 9.5 days and regularly aggregates up to 3.11" (79mm) of precipitation.

How many days does it snow in December in Yorktown?

In Yorktown, New York, during December, snow falls for 4.7 days and regularly aggregates up to 2.32" (59mm) of snow.

What is the month with the shortest days in Yorktown?

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

How many hours of daylight does Yorktown have in December?

In Yorktown, the average day length in December is 9h and 16min.

When is the sunrise / sunset in December in Yorktown?

In December, on the first day of the month, sunrise is at 7:02 am and sunset at 4:26 pm. On the last day of the month, in Yorktown, New York, sunrise is at 7:20 am and sunset at 4:36 pm EST.

How long on average sun shines in December in Yorktown?

In December, the average sunshine duration in Yorktown, New York, is 4.9h.

What is the month with the lowest UV index in Yorktown?

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

What is the UV index reading in December in Yorktown?

In December, the average daily maximum UV index in Yorktown, New York, is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's 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
Yorktown, NY

Average temperature in December - Yorktown, NY
  • Average high temperature in December: 39.9°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in December: 28.8°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).

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Average pressure in December
Yorktown, NY

Average pressure in December - Yorktown, 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
Yorktown, NY

Average wind speed in December - Yorktown, NY
  • Average wind speed in December: 6.8mph

The windiest months (with the highest average wind speed) are January and March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in December
Yorktown, NY

Average humidity in December - Yorktown, NY
  • Average humidity in December: 79%

The months with the highest relative humidity are February, October and December (79%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in December
Yorktown, NY

Average rainfall in December - Yorktown, NY
  • Average rainfall in December: 3.11"

The wettest month (with the highest rainfall) is July (3.31").
The driest month (with the least rainfall) is February (1.81").

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Average rainfall days in December
Yorktown, NY

Average rainfall days in December - Yorktown, NY
  • Average rainfall days in December: 9.5 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (6.5 days).

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Average snowfall in December
Yorktown, NY

Average snowfall in December - Yorktown, NY
  • Average snowfall in December: 2.32"

The month with the highest snowfall is March (3.39").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Yorktown, NY

Average snowfall days in December - Yorktown, NY
  • Average snowfall days in December: 4.7 days

The month with the highest number of snowfall days is February (6.5 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
Yorktown, NY

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

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 5min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in December
Yorktown, NY

Average sunshine days in December - Yorktown, NY
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is July (11.4 days).

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Average UV index in December
Yorktown, NY

Average UV index in December - Yorktown, 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
Yorktown, NY

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

The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in December
Yorktown, NY

Average visibility in December - Yorktown, NY
  • Average visibility in December: 6mi

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

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Yorktown, New York, USA

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