Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December comes with a drop in the average high-temperature, falling from November's cool 51.4°F (10.8°C) to an icy 42.3°F (5.7°C). In New York, December is marked by an average low-temperature of 32.9°F (0.5°C).Humidity
February and December, with an average relative humidity of 76%, are the most humid months.Rainfall
In New York, in December, during 12.1 rainfall days, 3.5" (89mm) of precipitation is typically accumulated. Throughout the year, there are 169 rainfall days, and 36.65" (931mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In December, it is snowing for 3 days. Throughout December, 1.34" (34mm) of snow is accumulated. 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 in December is 47.1°F (8.4°C).Note: Swimming in 47.1°F (8.4°C) is deemed hazardous. Exposure to temperatures below 50°F (10°C) leads to immediate severe cold shock and hyperventilation.
Daylight
The month with the shortest days in New York is December, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:01 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:38 pm EST.
Sunshine
The average sunshine in December is 4.9h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. To protect against the Sun's most potent rays, avoid direct exposure around midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the ocean temperature in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
How high is the UV index in December?
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 pressure in December
New York, 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).
Average wind speed in December
New York, NY
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in December
New York, NY
- Average humidity in December: 76%
The 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 least 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 least 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").
The months with the least 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).
The months with the least 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: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
New York, NY
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is January (17.9 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in December
New York, NY
- Average UV index in December: 2
The months with the highest UV index are June, July and August (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
New York, NY
- Average cloud cover in December: 47
The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
New York, NY
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
New York, New York, USA
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