December weather forecast
Tristates, NY

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Weather in December

December, the first month of the winter in Tristates, is also a wintry month, with an average temperature ranging between max 37.6°F (3.1°C) and min 26.1°F (-3.3°C).

Temperature

The onset of December entails a temperature shift, as the average high-temperature decreases from a chilly 47.8°F (8.8°C) in November to a wintry 37.6°F (3.1°C). In the month of December, the average low-temperature in Tristates, New York, usually rests at a subzero cold 26.1°F (-3.3°C).

Humidity

February and December, with an average relative humidity of 83%, are the most humid months in Tristates.

Rainfall

In December, in Tristates, the rain falls for 11.5 days. Throughout December, 1.34" (34mm) of precipitation is accumulated. Throughout the year, in Tristates, there are 150.5 rainfall days, and 19.37" (492mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In December, it is snowing for 6.6 days. Throughout December, 1.34" (34mm) of snow is accumulated. Throughout the year, there are 36.1 snowfall days, and 9.8" (249mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Tristates, New York, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:05 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:39 pm EST.

Sunshine

In December, the average sunshine in Tristates, New York, 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 reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 2 suggests these recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Tristates in December?

The average high-temperature and low-temperature during December are 37.6°F (3.1°C) and 26.1°F (-3.3°C) respectively. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in July is calculated to be 89.6°F (32°C).

What are the most humid months in Tristates?

The months with the highest humidity are February and December, with an average relative humidity of 83%.

What is the average humidity in December in Tristates?

In Tristates, New York, the average relative humidity in December is 83%.

How much does it rain in Tristates in December?

In Tristates, in December, during 11.5 rainfall days, 1.34" (34mm) of precipitation is typically accumulated.

How many days does it snow in December in Tristates?

In Tristates, New York, in December, snow falls for 6.6 days, with typically accumulated 1.34" (34mm) of snow.

What is the month with the shortest days in Tristates?

With an average of 9h and 12min of daylight, December has the shortest days of the year.

What is the average length of the day in December in Tristates?

In Tristates, New York, the average day length in December is 9h and 15min.

When is the sunrise / sunset in December in Tristates?

In December, on the first day of the month, sunrise is at 7:05 am and sunset at 4:30 pm. On the last day of the month, in Tristates, New York, sunrise is at 7:24 am and sunset at 4:39 pm EST.

How many hours of sunshine does Tristates have in December?

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

What are the months with the lowest UV index in Tristates?

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

What is the UV index intensity in December in Tristates?

The average daily maximum UV index in December in Tristates, New York, is 2. A UV Index value 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
Tristates, NY

Average temperature in December - Tristates, NY
  • Average high temperature in December: 37.6°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (32°F).

  • Average low temperature in December: 26.1°F

The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in December
Tristates, NY

Average pressure in December - Tristates, NY
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Tristates, NY

Average wind speed in December - Tristates, NY
  • Average wind speed in December: 7mph

The windiest month (with the highest average wind speed) is March (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
Tristates, NY

Average humidity in December - Tristates, NY
  • Average humidity in December: 83%

The months with the highest relative humidity are February and December (83%).
The months with the lowest relative humidity are April and July (77%).

Average rainfall in December
Tristates, NY

Average rainfall in December - Tristates, NY
  • Average rainfall in December: 1.34"

The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is January (1.02").

Average rainfall days in December
Tristates, NY

Average rainfall days in December - Tristates, NY
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is May (16.7 days).
The months with the least rainy days are January and February (8.6 days).

Average snowfall in December
Tristates, NY

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

The month with the highest snowfall is February (3.07").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Tristates, NY

Average snowfall days in December - Tristates, NY
  • Average snowfall days in December: 6.6 days

The month with the highest number of snowfall days is February (10 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Tristates, 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 12min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

Average sunshine days in December
Tristates, NY

Average sunshine days in December - Tristates, NY
  • Average sunshine days in December: 16.1 days

The month with the most sunshine days is October (17.4 days).
The months with the least sunshine days are April and May (11.8 days).

Average UV index in December
Tristates, NY

Average UV index in December - Tristates, NY
  • Average UV index in December: 2

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Tristates, NY

Average cloud cover in December - Tristates, NY
  • Average cloud cover in December: 52

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 36).

Average visibility in December
Tristates, NY

Average visibility in December - Tristates, NY
  • Average visibility in December: 5mi

The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).

Tristates, New York, USA

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