New York
New York, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
New York, NY

The sunset view over New York city skyscrapers in New York, with the dramatic night sky
The sunset view over New York city skyscrapers in New York, with the dramatic night sky
The first month of the winter, December, is still a cold month in New York, New York, with average temperature ranging between max 42.3°F (5.7°C) and min 32.9°F (0.5°C).

Temperature

In New York, the average high-temperature in December drops, from a fresh 51.4°F (10.8°C) in November, to a cold 42.3°F (5.7°C). In December, in New York, New York, the average low-temperature is 32.9°F (0.5°C).

Humidity

February and December, with an average relative humidity of 76%, are most humid months.

Rainfall

In New York, New York, in December, it is raining for 12.1 days, with typically 3.5" (89mm) of accumulated precipitation. Throughout the year, in New York, there are 169 rainfall days, and 36.65" (931mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in New York, New York. In New York, in December, snow falls for 3 days, with typically accumulated 1.34" (34mm) of snow. Throughout the year, there are 19.2 snowfall days, and 7.8" (198mm) of snow is accumulated.

Ocean temperature

In New York, the average seawater temperature is 47.1°F (8.4°C).
Note: Swimming in 47.1°F (8.4°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

With an average of 9.3h of daylight, December has the shortest days of the year.

Sunshine

In December, the average sunshine is 4.9h.

UV index

Months with the lowest UV index in New York 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 low threat to health from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in New York?

In New York, New York, in December, the average high-temperature is 42.3°F (5.7°C), and the average low-temperature is 32.9°F (0.5°C).

What is the most humid month in New York?

February and December, with an average relative humidity of 76%, are most humid months in New York.

What is the average humidity in December in New York?

The average relative humidity in December in New York is 76%.

How much does it rain in New York in December?

In New York, in December, during 12.1 rainfall days, 3.5" (89mm) of precipitation is typically accumulated.

How many days does it snow in December in New York?

In New York, in December, snow falls for 3 days, with typically accumulated 1.34" (34mm) of snow.

What is the ocean temperature in December in New York?

In New York, in December, the average water temperature is 47.1°F (8.4°C). Swimming in 47.1°F (8.4°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

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

December has the shortest days of the year, with an average of 9.3h of daylight.

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

In New York, New York, the average length of the day in December is 9.3h.

How long on average sun shines in December in New York?

The average sunshine in December in New York is 4.9h.

When is the lowest UV index in New York?

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

How high is the UV index in December in New York?

In December, the average daily maximum UV index in New York, New York, is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from the exposure to the Sun's UV radiation.
Average temperature in December - New York, NY
  • Average high temperature in December: 42.3°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in December: 32.9°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average humidity in December - New York, NY
  • Average humidity in December: 76%

Months with the highest relative humidity are February and December (76%).
The month with the lowest relative humidity is August (70%).

Average rainfall in December - New York, NY
  • Average rainfall in December: 3.5"

The wettest month (with the highest rainfall) is July (4.02").
The driest month (with the lowest rainfall) is January (2.17").

Average rainfall days in December - New York, NY
  • Average rainfall days in December: 12.1 days

The month with the highest number of rainy days is July (18.5 days).
The month with the lowest number of rainy days is January (9.1 days).

Average snowfall in December - New York, NY
  • Average snowfall in December: 1.34"

The month with the highest snowfall is March (2.64").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average snowfall days in December - New York, NY
  • Average snowfall days in December: 3 days

The month with the highest number of snowfall days is January (5.8 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in December - New York, NY
  • Average sea temperature in December: 47.2°F

The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.7°F).

Average daylight in December / Average sunshine in December - New York, NY
  • Average daylight in December: 9.3h

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 4.9h

The month with most sunshine is July (Average sunshine: 10.5h).
The month with least sunshine is February (Average sunshine: 4.7h).

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

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).