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 from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from a chilly 43.2°F (6.2°C) to a cold 33.3°F (0.7°C). Belfast sees an average low-temperature of 23.7°F (-4.6°C) during December.Humidity
In Belfast, the average relative humidity in December is 88%.Rainfall
In December, in Belfast, the rain falls for 9.4 days. Throughout December, 2.52" (64mm) of precipitation is accumulated. In Belfast, during the entire year, the rain falls for 170.2 days and collects up to 29.29" (744mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Belfast. In Belfast, in December, snow falls for 19.1 days, with typically accumulated 8.94" (227mm) of snow. Throughout the year, in Belfast, there are 95.9 snowfall days, and 45.12" (1146mm) of snow is accumulated.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year in Belfast, New York.On the first day of December, sunrise is at 7:22 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 4:50 pm EST.
Sunshine
In Belfast, New York, the average sunshine in December is 2.6h.UV index
The months with the lowest UV index in Belfast are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum high UV index of 1 in December translates into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
How cold is it in Belfast in December?
What is the average humidity in December in Belfast?
How many days does it rain in December in Belfast?
How much does it snow in Belfast in December?
What is the month with the shortest days in Belfast?
How many hours of daylight does Belfast have in December?
When is the sunrise / sunset in December in Belfast?
How long on average sun shines in December in Belfast?
When is the lowest UV index in Belfast?
What is the UV index reading in December in Belfast?
Average temperature in December
Belfast, NY
- Average high temperature in December: 33.3°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in December: 23.7°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in December
Belfast, NY
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Belfast, NY
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Belfast, NY
- Average humidity in December: 88%
The months with the highest relative humidity are January and February (89%).
The months with the lowest relative humidity are May, June and July (79%).
Average rainfall in December
Belfast, NY
- Average rainfall in December: 2.52"
The wettest month (with the highest rainfall) is April (3.07").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Belfast, NY
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in December
Belfast, NY
- Average snowfall in December: 8.94"
The month with the highest snowfall is February (11.1").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Belfast, NY
- Average snowfall days in December: 19.1 days
The month with the highest number of snowfall days is January (20.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Belfast, NY
- 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 6min).
- Average sunshine in December: 2h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in December
Belfast, NY
- Average sunshine days in December: 7.1 days
The month with the most sunshine days is September (12 days).
The month with the least sunshine days is February (5.2 days).
Average UV index in December
Belfast, NY
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Belfast, NY
- Average cloud cover in December: 76
The month with the most cloud cover is January (Cloud cover 78).
The months with the least cloud cover are July and August (Cloud cover 40).
Average visibility in December
Belfast, NY
- Average visibility in December: 4mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).
Belfast, New York, USA
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