December weather forecastShelter Harbor, RI
December
Weather in December
The first month of the winter, December, is also an icy month in Shelter Harbor, Rhode Island, with an average temperature fluctuating between 42.6°F (5.9°C) and 33.6°F (0.9°C).Temperature
December implies a soft temperature shift, with average high-temperatures reducing from November's cool 51.3°F (10.7°C) to an icy 42.6°F (5.9°C). Shelter Harbor's average temperature throughout the nights in December exhibits a minor decrease from daytime highs, stabilizing at a still wintry 33.6°F (0.9°C).Humidity
In December, the average relative humidity is 75%.Rainfall
The month with the most rainfall is December, when the rain falls for 11.5 days and typically aggregates up to 3.39" (86mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Shelter Harbor, during December, snow falls for 3.5 days and regularly aggregates up to 1.06" (27mm) of snow. Throughout the year, there are 18.6 snowfall days, and 6.26" (159mm) 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 6:54 am and sunset at 4:18 pm. On the last day of December, sunrise is at 7:12 am and sunset at 4:27 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 4.8h of sunshine.UV index
January through March and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: A maximum UV index of 2 in December translates into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Shelter Harbor, RI
- Average high temperature in December: 42.6°F
The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in December: 33.6°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in December
Shelter Harbor, RI
- Average pressure in December: 30.04"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).
Average wind speed in December
Shelter Harbor, RI
- Average wind speed in December: 12mph
The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest months (with the lowest average wind speed) are July and August (8.3mph).
Average humidity in December
Shelter Harbor, RI
- Average humidity in December: 75%
The months with the highest relative humidity are June and July (81%).
The months with the lowest relative humidity are March and November (74%).
Average rainfall in December
Shelter Harbor, RI
- Average rainfall in December: 3.39"
The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in December
Shelter Harbor, RI
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in December
Shelter Harbor, RI
- Average snowfall in December: 1.06"
The month with the highest snowfall is March (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Shelter Harbor, RI
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is January (5.6 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
Shelter Harbor, RI
- Average daylight in December: 9h and 12min
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 12min).
- Average sunshine in December: 4h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in December
Shelter Harbor, RI
- Average sunshine days in December: 17 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is July (11 days).
Average UV index in December
Shelter Harbor, 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 and December (UV index 2).
Average cloud cover in December
Shelter Harbor, RI
- Average cloud cover in December: 47
The months with the most cloud cover are March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Shelter Harbor, 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).
