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
Transition into December marks a drop in the average high-temperature, moving from a cool 50.4°F (10.2°C) in November to an icy 40.8°F (4.9°C). In December, the nighttime temperature lowers to an average of 30.7°F (-0.7°C).Humidity
In Westcott, the average relative humidity in December is 76%.Rainfall
In Westcott, in December, it is raining for 10.2 days, with typically 1.81" (46mm) of accumulated precipitation. Throughout the year, there are 135.6 rainfall days, and 20.39" (518mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In Westcott, in December, snow falls for 4 days, with typically accumulated 1.06" (27mm) of snow. Throughout the year, there are 21.2 snowfall days, and 6.46" (164mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 6:54 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:25 pm EST.
Sunshine
The months with the least sunshine are February and December, with an average of 4.8h of sunshine.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 rays for ordinary individuals.Note: The UV index of 2 during December translates into the following guidance:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Westcott, RI
- Average high temperature in December: 40.8°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 30.7°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).
Average pressure in December
Westcott, RI
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Westcott, RI
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in December
Westcott, RI
- Average humidity in December: 76%
The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Westcott, RI
- Average rainfall in December: 1.81"
The wettest month (with the highest rainfall) is April (2.17").
The driest month (with the least rainfall) is September (0.94").
Average rainfall days in December
Westcott, RI
- Average rainfall days in December: 10.2 days
The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in December
Westcott, RI
- Average snowfall in December: 1.06"
The month with the highest snowfall is March (1.89").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Westcott, RI
- Average snowfall days in December: 4 days
The month with the highest number of snowfall days is January (6 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
Westcott, RI
- 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 month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in December
Westcott, RI
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (12.9 days).
Average UV index in December
Westcott, RI
- 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, November and December (UV index 2).
Average cloud cover in December
Westcott, RI
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Westcott, RI
- 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).
Westcott, Rhode Island, USA
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