December weather forecast
Bellport, NY

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Weather in December

December, the first month of the winter in Bellport, is still a chilly month, with an average temperature ranging between min 37°F (2.8°C) and max 44.8°F (7.1°C).

Temperature

A moderate decline in average high-temperatures is noted in December, moving from a cool 52.5°F (11.4°C) in November to a chilly 44.8°F (7.1°C). A mean low-temperature of 37°F (2.8°C) is a distinguishing feature of December, indicating a slight dip from daytime highs.

Humidity

The average relative humidity in December is 74%.

Rainfall

December is the month with the most rainfall. Rain falls for 12.8 days and accumulates 3.31" (84mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In December, it is snowing for 3.4 days. Throughout December, 0.63" (16mm) of snow is accumulated. In Bellport, during the entire year, snow falls for 17.9 days and aggregates up to 4.57" (116mm) of snow.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:57 am and sunset at 4:24 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:34 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 Bellport. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 2 in December transforms into the following instructions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in December?

In Bellport, in December, the average high-temperature is 44.8°F (7.1°C), and the average low-temperature is 37°F (2.8°C).

What is the average humidity in December?

In Bellport, the average relative humidity in December is 74%.

What is the wettest month?

December is the month with the most rainfall. Rain falls for 12.8 days and accumulates 3.31" (84mm) of precipitation.

How many days does it rain in December?

In Bellport, in December, it is raining for 12.8 days, with typically 3.31" (84mm) of accumulated precipitation.

How many days does it snow in December?

In Bellport, during December, snow falls for 3.4 days and regularly aggregates up to 0.63" (16mm) of snow.

What is the month with the shortest days?

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

What is the average length of the day in December?

In December, the average day length in Bellport is 9h and 19min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:57 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:34 pm EST.

How long on average sun shines in December?

In Bellport, the average sunshine duration in December is 4.9h.

When is the lowest UV index?

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

What is the UV index reading in December in Bellport?

In Bellport, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat from 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
Bellport, NY

Average temperature in December - Bellport, NY
  • Average high temperature in December: 44.8°F

The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in December: 37°F

The months with the highest average low temperature are July and August (71.4°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure in December
Bellport, NY

Average pressure in December - Bellport, 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
Bellport, NY

Average wind speed in December - Bellport, NY
  • Average wind speed in December: 14mph

The windiest month (with the highest average wind speed) is January (14.5mph).
The calmest months (with the lowest average wind speed) are July and August (9.6mph).

Average humidity in December
Bellport, NY

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

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is November (71%).

Average rainfall in December
Bellport, NY

Average rainfall in December - Bellport, NY
  • Average rainfall in December: 3.31"

The wettest month (with the highest rainfall) is December (3.31").
The driest months (with the least rainfall) are January, February and September (2.01").

Average rainfall days in December
Bellport, NY

Average rainfall days in December - Bellport, NY
  • Average rainfall days in December: 12.8 days

The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is February (9 days).

Average snowfall in December
Bellport, NY

Average snowfall in December - Bellport, NY
  • Average snowfall in December: 0.63"

The month with the highest snowfall is January (1.5").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Bellport, NY

Average snowfall days in December - Bellport, NY
  • Average snowfall days in December: 3.4 days

The month with the highest number of snowfall days is February (5.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Bellport, 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 months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Bellport, NY

Average sunshine days in December - Bellport, NY
  • Average sunshine days in December: 13.5 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is February (12.8 days).

Average UV index in December
Bellport, NY

Average UV index in December - Bellport, 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
Bellport, NY

Average cloud cover in December - Bellport, NY
  • Average cloud cover in December: 49

The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 26).

Average visibility in December
Bellport, NY

Average visibility in December - Bellport, 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).

Bellport, New York, USA

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