December weather forecast
Southampton, NY

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Weather in December

The first month of the winter, December, is also a frosty month in Southampton, New York, with an average temperature ranging between min 38.3°F (3.5°C) and max 45.3°F (7.4°C).

Temperature

Southampton's weather in December involves a mild decrease in the average high-temperature, moving down slightly from November's fresh 52.9°F (11.6°C) to a frosty 45.3°F (7.4°C). Throughout December, Southampton's nights experience a slight temperature dip to a wintry 38.3°F (3.5°C).

Humidity

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

Rainfall

The months with the most rainfall in Southampton are October and December, with an average 2.6" (66mm) of precipitation.

Snowfall

January through March, May, November and December are months with snowfall. In Southampton, in December, snow falls for 2.5 days, with typically accumulated 0.75" (19mm) of snow. In Southampton, during the entire year, snow falls for 15.6 days and aggregates up to 5.16" (131mm) 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 6:55 am and sunset at 4:22 pm. On the last day of December, in Southampton, sunrise is at 7:13 am and sunset at 4:31 pm EST.

Sunshine

With an average of 4.7h of sunshine, December has the least sunshine of the year.

UV index

January through March and December, with an average maximum UV index of 2, are months with the lowest UV index in Southampton, New York. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: During December, 2 as the daily maximum UV index converts into the following advice:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. To protect against the Sun's most potent rays, avoid direct exposure around midday. Enhance your sun protection with tightly woven, yet airy clothing. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the temperature in December in Southampton?

December temperatures in Southampton vary between a high-temperature of 45.3°F (7.4°C) and a low-temperature of 38.3°F (3.5°C).

What is the average humidity in December in Southampton?

The average relative humidity in December in Southampton, New York, is 74%.

What is the rainiest month in Southampton?

The months with the most rainfall are October and December, with an average 2.6" (66mm) of precipitation.

How much does it rain in Southampton in December?

In Southampton, during December, the rain falls for 11.8 days and regularly aggregates up to 2.6" (66mm) of precipitation.

How much does it snow in Southampton in December?

In December, in Southampton, it is snowing for 2.5 days. Throughout December, 0.75" (19mm) of snow is accumulated.

What is the month with the shortest days in Southampton?

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

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

The average day length in December in Southampton is 9h and 18min.

When are sunrise and sunset in December in Southampton?

On the first day of December in Southampton, New York, sunrise is at 6:55 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:31 pm EST.

What is the month with the least sunshine in Southampton?

December has the least sunshine of the year, with an average of 4.7h of sunshine.

How many hours of sunshine does Southampton have in December?

In December, the average sunshine duration in Southampton, New York, is 4.7h.

When is the lowest UV index in Southampton?

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

How high is the UV index in December in Southampton?

The average daily maximum UV index in December in Southampton is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation.
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
Southampton, NY

Average temperature in December - Southampton, NY
  • Average high temperature in December: 45.3°F

The warmest month (with the highest average high temperature) is August (75.7°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in December: 38.3°F

The month with the highest average low temperature is August (71.2°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).

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Average pressure in December
Southampton, NY

Average pressure in December - Southampton, NY
  • Average pressure in December: 30.05"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Southampton, NY

Average wind speed in December - Southampton, NY
  • Average wind speed in December: 15.9mph

The windiest month (with the highest average wind speed) is January (16.3mph).
The calmest month (with the lowest average wind speed) is July (10.7mph).

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Average humidity in December
Southampton, NY

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

The month with the highest relative humidity is May (82%).
The month with the lowest relative humidity is November (72%).

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Average rainfall in December
Southampton, NY

Average rainfall in December - Southampton, NY
  • Average rainfall in December: 2.6"

The wettest months (with the highest rainfall) are October and December (2.6").
The driest month (with the least rainfall) is September (1.5").

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Average rainfall days in December
Southampton, NY

Average rainfall days in December - Southampton, NY
  • Average rainfall days in December: 11.8 days

The months with the highest number of rainy days are May and July (14.8 days).
The months with the least rainy days are January and February (8.8 days).

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Average snowfall in December
Southampton, NY

Average snowfall in December - Southampton, NY
  • Average snowfall in December: 0.75"

The month with the highest snowfall is March (1.57").
The months with the least snowfall are April, June, July, August, September and October (0").

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Average snowfall days in December
Southampton, NY

Average snowfall days in December - Southampton, NY
  • Average snowfall days in December: 2.5 days

The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Southampton, 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 4min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).

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Average sunshine days in December
Southampton, NY

Average sunshine days in December - Southampton, NY
  • Average sunshine days in December: 14.5 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (13.9 days).

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Average UV index in December
Southampton, NY

Average UV index in December - Southampton, 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).

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Average cloud cover in December
Southampton, NY

Average cloud cover in December - Southampton, NY
  • Average cloud cover in December: 51

The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in December
Southampton, NY

Average visibility in December - Southampton, 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).

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Southampton, New York, USA

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