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
As November shifts into December, a slight alteration in temperatures is observed, with average highs reducing from a frosty 46.8°F (8.2°C) to an icy 36.7°F (2.6°C). In the month of December, Southwick experiences an average low-temperature of 25.5°F (-3.6°C).Humidity
In December, the average relative humidity is 80%.Rainfall
The month with the most rainfall in Southwick, Massachusetts, is December, when the rain falls for 10.9 days and typically aggregates up to 3.43" (87mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, in Southwick, it is snowing for 6.8 days. Throughout December, 4.25" (108mm) of snow is accumulated. In Southwick, during the entire year, snow falls for 37.5 days and aggregates up to 21.26" (540mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Southwick.On the first day of the month, sunrise is at 7:00 am and sunset at 4:20 pm. On the last day of December, in Southwick, sunrise is at 7:19 am and sunset at 4:29 pm EST.
Sunshine
The average sunshine in December in Southwick is 4.5h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 2 in December transforms into this advice:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is it in Southwick in December?
What is the average humidity in December in Southwick?
What is the rainiest month in Southwick?
How much does it rain in Southwick in December?
How many days does it snow in December in Southwick?
What is the month with the shortest days in Southwick?
How many hours of daylight does Southwick have in December?
What time are sunrise and sunset in December in Southwick?
How many hours of sunshine does Southwick have in December?
What are the months with the lowest UV index in Southwick?
What is the UV index intensity in December in Southwick?
Average temperature in December
Southwick, MA
- Average high temperature in December: 36.7°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in December: 25.5°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in December
Southwick, 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
Southwick, MA
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in December
Southwick, 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 (73%).
Average rainfall in December
Southwick, MA
- Average rainfall in December: 3.43"
The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in December
Southwick, MA
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Southwick, MA
- Average snowfall in December: 4.25"
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
Southwick, MA
- Average snowfall days in December: 6.8 days
The month with the highest number of snowfall days is February (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Southwick, 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 3min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in December
Southwick, MA
- Average sunshine days in December: 14.7 days
The month with the most sunshine days is January (16.6 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in December
Southwick, 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
Southwick, MA
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in December
Southwick, 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).
Southwick, Massachusetts, USA
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