December weather forecastBelfast, NY
December
Weather in December
December, the first month of the winter in Belfast, is also a wintry month, with an average temperature ranging between min 23.7°F (-4.6°C) and max 33.3°F (0.7°C).Temperature
December is characterized by a reduction in the average high-temperature, from a chilly 43.2°F (6.2°C) in November to a cold 33.3°F (0.7°C). Belfast's temperature lowers to a mean of 23.7°F (-4.6°C) during the nights in December.Humidity
In December, the average relative humidity is 88%.Rainfall
In Belfast, in December, during 9.4 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. Throughout the year, there are 170.2 rainfall days, and 29.29" (744mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Belfast, during December, snow falls for 19.1 days and regularly aggregates up to 8.94" (227mm) of snow. Throughout the year, there are 95.9 snowfall days, and 45.12" (1146mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.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 December, the average sunshine is 2.6h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the average maximum UV index of 1 translates into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 6min
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 36min
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).
