December weather forecast
Melville, NY

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Weather in December

The first month of the winter, December, is also a frosty month in Melville, New York, with an average temperature fluctuating between 36.7°F (2.6°C) and 43.7°F (6.5°C).

Temperature

With December's onset, the weather reveals a slight temperature decrease, transitioning from a cool 51.6°F (10.9°C) in November to a chilly 43.7°F (6.5°C). Night temperatures during December in Melville experience a slight downturn, averaging an icy 36.7°F (2.6°C).

Humidity

The average relative humidity in December in Melville is 74%.

Rainfall

In Melville, during December, the rain falls for 9.3 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, in Melville, New York, there are 128.1 rainfall days, and 12.56" (319mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Melville, New York, are January through May, November and December. In Melville, during December, snow falls for 1.7 days and regularly aggregates up to 0.24" (6mm) of snow. In Melville, during the entire year, snow falls for 12 days and aggregates up to 1.26" (32mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 6:59 am and sunset at 4:26 pm. On the last day of December, sunrise is at 7:17 am and sunset at 4:36 pm EST.

Sunshine

In December, the average sunshine is 4.9h.

UV index

January through March and December, with an average maximum UV index of 2, are months with the lowest UV index in Melville. 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: A maximum high UV index of 2 in December translates into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. It's recommended to limit sun exposure when its radiation is at its peak during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is December cold in Melville?

During December, Melville experiences an average high-temperature of 43.7°F (6.5°C) and a low-temperature of 36.7°F (2.6°C).

What is the average humidity in December in Melville?

In December, the average relative humidity in Melville, New York, is 74%.

How many days does it rain in December in Melville?

In Melville, New York, in December, it is raining for 9.3 days, with typically 1.14" (29mm) of accumulated precipitation.

How many days does it snow in December in Melville?

In December, it is snowing for 1.7 days. Throughout December, 0.24" (6mm) of snow is accumulated.

What is the month with the shortest days in Melville?

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

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

In December, the average day length in Melville, New York, is 9h and 19min.

When are sunrise and sunset in December in Melville?

In December, on the first day of the month, sunrise is at 6:59 am and sunset at 4:26 pm. On the last day of the month, in Melville, sunrise is at 7:17 am and sunset at 4:36 pm EST.

How many hours of sunshine does Melville have in December?

In December, the average sunshine duration is 4.9h.

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

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

What is the UV index intensity in December in Melville?

In December, the average daily maximum UV index in Melville is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
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
Melville, NY

Average temperature in December - Melville, NY
  • Average high temperature in December: 43.7°F

The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in December: 36.7°F

The month with the highest average low temperature is August (71.8°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

Average pressure in December
Melville, NY

Average pressure in December - Melville, NY
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Melville, NY

Average wind speed in December - Melville, NY
  • Average wind speed in December: 12.8mph

The windiest month (with the highest average wind speed) is January (13.3mph).
The calmest month (with the lowest average wind speed) is July (8.7mph).

Average humidity in December
Melville, NY

Average humidity in December - Melville, NY
  • Average humidity in December: 74%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (71%).

Average rainfall in December
Melville, NY

Average rainfall in December - Melville, NY
  • Average rainfall in December: 1.14"

The wettest month (with the highest rainfall) is July (1.73").
The driest month (with the least rainfall) is February (0.59").

Average rainfall days in December
Melville, NY

Average rainfall days in December - Melville, NY
  • Average rainfall days in December: 9.3 days

The month with the highest number of rainy days is July (14.1 days).
The month with the least rainy days is January (5.9 days).

Average snowfall in December
Melville, NY

Average snowfall in December - Melville, NY
  • Average snowfall in December: 0.24"

The month with the highest snowfall is March (0.35").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Melville, NY

Average snowfall days in December - Melville, NY
  • Average snowfall days in December: 1.7 days

The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Melville, 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 54min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Melville, NY

Average sunshine days in December - Melville, NY
  • Average sunshine days in December: 19.8 days

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is June (14 days).

Average UV index in December
Melville, NY

Average UV index in December - Melville, 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 and December (UV index 2).

Average cloud cover in December
Melville, NY

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

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in December
Melville, NY

Average visibility in December - Melville, 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).

Melville, New York, USA

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