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 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
Southampton in December experiences a subtle temperature decline, with average high-temperatures reducing from a frosty 46.8°F (8.2°C) in November to a wintry 36.5°F (2.5°C). In Southampton, December is marked by an average low-temperature of 25.5°F (-3.6°C).Humidity
In Southampton, the average relative humidity in December is 80%.Rainfall
The wettest months in Southampton are October and December, with an average 3.27" (83mm) of rainfall.Snowfall
January through May, October through December are months with snowfall in Southampton. In Southampton, during December, snow falls for 6.5 days and regularly aggregates up to 4.33" (110mm) of snow. Throughout the year, there are 37.4 snowfall days, and 21.77" (553mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:00 am and sunset at 4:19 pm. On the last day of December, sunrise is at 7:19 am and sunset at 4:28 pm EST.
Sunshine
In December, the average sunshine is 4.8h.UV index
The months with the lowest UV index in Southampton are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 2 in December leads to these recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
What is the wettest month?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days in Southampton?
How many hours of daylight does Southampton have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Southampton, MA
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 25.5°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Southampton, MA
- Average pressure in December: 30.05"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
Southampton, MA
- Average wind speed in December: 7.8mph
The windiest months (with the highest average wind speed) are January, February and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Southampton, MA
- Average humidity in December: 80%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Southampton, MA
- Average rainfall in December: 3.27"
The wettest months (with the highest rainfall) are October and December (3.27").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in December
Southampton, MA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is January (8.9 days).
Average snowfall in December
Southampton, MA
- Average snowfall in December: 4.33"
The month with the highest snowfall is February (5.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Southampton, MA
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Southampton, MA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Southampton, MA
- Average sunshine days in December: 14.6 days
The month with the most sunshine days is January (16.2 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in December
Southampton, MA
- Average UV index in December: 2
The month with the highest UV index is June (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
Southampton, MA
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Southampton, MA
- Average visibility in December: 6mi
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).
Southampton, Massachusetts, USA
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