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
December
Weather in December
Temperature
The transition into December subtly indicates a reduction in the average high-temperature, down to a chilly 44.1°F (6.7°C) from November's fresh 52.2°F (11.2°C). An average nighttime temperature of 37°F (2.8°C) marks December.Humidity
In Massapequa, the average relative humidity in December is 74%.Rainfall
In December, the rain falls for 12.6 days. Throughout December, 3.27" (83mm) of precipitation is accumulated. In Massapequa, during the entire year, the rain falls for 158.8 days and collects up to 31.38" (797mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Massapequa, in December, during 2.7 snowfall days, 0.59" (15mm) of snow is typically accumulated. In Massapequa, during the entire year, snow falls for 16.8 days and aggregates up to 4.17" (106mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:59 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:36 pm EST.
Sunshine
The average sunshine in December is 4.9h.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 of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 2 during December leads to these instructions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during 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?
How many hours of daylight does Massapequa have in December?
When are sunrise and sunset in December?
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
Massapequa, NY
- Average high temperature in December: 44.1°F
The warmest months (with the highest average high temperature) are July and August (78.4°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 37°F
The months with the highest average low temperature are July and August (72°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in December
Massapequa, NY
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Massapequa, NY
- Average wind speed in December: 13.4mph
The windiest month (with the highest average wind speed) is January (13.9mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).
Average humidity in December
Massapequa, NY
- Average humidity in December: 74%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is November (71%).
Average rainfall in December
Massapequa, NY
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in December
Massapequa, NY
- Average rainfall days in December: 12.6 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in December
Massapequa, NY
- Average snowfall in December: 0.59"
The month with the highest snowfall is March (1.34").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Massapequa, NY
- Average snowfall days in December: 2.7 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Massapequa, NY
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Massapequa, NY
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in December
Massapequa, NY
- 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
Massapequa, NY
- Average cloud cover in December: 48
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Massapequa, NY
- 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).