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
A decrease in the average high-temperature is observed during December, shifting from a chilly 49.5°F (9.7°C) in November to an icy 39.7°F (4.3°C). December in Harmony, Rhode Island, sees the temperature falling to a mean low of 28.9°F (-1.7°C).Humidity
The average relative humidity in December is 77%.Rainfall
In Harmony, in December, during 10.1 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. In Harmony, during the entire year, the rain falls for 137.6 days and collects up to 23.98" (609mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Harmony, during December, snow falls for 4.5 days and regularly aggregates up to 2.28" (58mm) of snow. In Harmony, during the entire year, snow falls for 26.3 days and aggregates up to 12.64" (321mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 6:55 am and sunset at 4:16 pm. On the last day of December, in Harmony, sunrise is at 7:13 am and sunset at 4:25 pm EST.
Sunshine
In Harmony, the average sunshine in December is 4.8h.UV index
The months with the lowest UV index in Harmony are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
How cold is December in Harmony?
What is the average humidity in December in Harmony?
How many days does it rain in December in Harmony?
How many days does it snow in December in Harmony?
What is the month with the shortest days in Harmony?
What is the average length of the day in December in Harmony?
When are sunrise and sunset in December in Harmony?
How long on average sun shines in December in Harmony?
When is the lowest UV index in Harmony?
How high is the UV index in December in Harmony?
Average temperature in December
Harmony, RI
- Average high temperature in December: 39.7°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in December: 28.9°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in December
Harmony, 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
Harmony, RI
- Average wind speed in December: 8.8mph
The windiest months (with the highest average wind speed) are February and March (9.4mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Harmony, RI
- Average humidity in December: 77%
The months with the highest relative humidity are February, June, September and October (78%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Harmony, RI
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is April (2.52").
The driest month (with the least rainfall) is September (1.06").
Average rainfall days in December
Harmony, RI
- Average rainfall days in December: 10.1 days
The month with the highest number of rainy days is June (15.1 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in December
Harmony, RI
- Average snowfall in December: 2.28"
The month with the highest snowfall is March (3.03").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Harmony, RI
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is March (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Harmony, 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 12min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Harmony, RI
- Average sunshine days in December: 16.7 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is April (13.6 days).
Average UV index in December
Harmony, 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
Harmony, RI
- Average cloud cover in December: 47
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Harmony, RI
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, October, November and December (6mi).
The months with the lowest visibility are June, July, August and September (5mi).
Harmony, Rhode Island, USA
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