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

December weather forecast and Climate
New York, NY

December in New York is the official first winter month. It is characterized by an average humidity of 64% and a further decrease in temperatures to 39.2°F (4°C) minimum average and 55.4°F (13°C) maximum average. At night, the temperatures come below the freezing point. Snow falls from the middle of December onwards with the average snow days being two and a half.
Rainfall experienced in December is moderately higher as it progresses for an average of eleven days the whole month to collect at 3.3" (83.8mm) in the rain gauge. Thunderstorms and flooding are rare owing to the minimal rain, but it may be accompanied by harsh cold winds in the late afternoons.
The ocean temperature remains steady at 57.2°F (14°C) as does the humidity at 64%. With the chilly winds experienced in December, long-term outdoor activities may get unlikely for visitors. The locals endure as they are used to this weather conditions.
The sun shines for nearly six hours per day albeit weakly. This allows for snow skating and basking at the least. Most tourists leave New York for warmer cities as the cold temperatures keep dropping with the progressing of winter.
  • The average high temperature in December: 6.1°C

The warmest month (with the highest average high temperature) is July (28.9°C).
The month with the lowest average high temperature is January (3.5°C).

  • The average low temperature in December: 0°C

The month with the highest average low temperature is July (20.4°C).
The coldest month (with the lowest average low temperature) is January (-2.8°C).

  • The average humidity in December: 64.1%

The month with the highest relative humidity is September (67.8%).
The month with the lowest relative humidity is April (55.3%).

  • The average rainfall in December: 101.6mm

The wettest month (with the highest rainfall) is July (116.8mm).
The driest month (with the lowest rainfall) is February (78.5mm).

  • The average rainfall days in December: 10.6 days

The month with the highest number of rainy days is April (11.5 days).
The month with the lowest number of rainy days is September (8.7 days).

  • The average snowfall in December: 121.9mm

The month with the highest snowfall is February (233.7mm).
Months with the lowest snowfall are May, June, July, August, September and October (0mm).

  • The average snowfall days in December: 2.3 days

The month with the highest number of snowfall days is January (4 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

  • The average sea temperature in December: 10°C

The best month for swimming (with the highest average sea temperature) is August (23°C).
Coldest months (with the lowest average sea temperature) are February and March (5°C).

  • The average daylight in December: 9h

Months with the longest days are June and July (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9h).

  • The average sunshine in December: 4.5h

Months with most sunshine are July and August (Average sunshine: 8.7h).
The month with least sunshine is December (Average sunshine: 4.5h).

  • The average UV index in December: 1

Months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 1).