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
Uniondale in December experiences a gentle temperature dip, with average high-temperatures reducing from a fresh 51.6°F (10.9°C) in November to a chilly 43.7°F (6.5°C). Uniondale indicates a consistently low-temperature of 36.1°F (2.3°C) during the nights of December.Humidity
In Uniondale, the average relative humidity in December is 74%.Rainfall
In Uniondale, in December, it is raining for 9.7 days, with typically 0.87" (22mm) of accumulated precipitation. Throughout the year, there are 112.1 rainfall days, and 8.66" (220mm) of precipitation is accumulated.Snowfall
January through March, October through December are months with snowfall in Uniondale. In Uniondale, in December, snow falls for 2.5 days, with typically accumulated 0.35" (9mm) of snow. In Uniondale, during the entire year, snow falls for 14.1 days and aggregates up to 1.34" (34mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 6:59 am and sunset at 4:27 pm. On the last day of December, in Uniondale, New York, sunrise is at 7:18 am and sunset at 4:37 pm EST.
Sunshine
In Uniondale, the average sunshine in December is 5h.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 reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Avoiding the Sun during its peak radiation time around midday is a healthy practice. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold does it get in Uniondale in December?
What is the average humidity in December in Uniondale?
How much does it rain in Uniondale in December?
How many days does it snow in December in Uniondale?
What is the month with the shortest days in Uniondale?
How many hours of daylight does Uniondale have in December?
What time are sunrise and sunset in December in Uniondale?
How long on average sun shines in December in Uniondale?
When is the lowest UV index in Uniondale?
What is the UV index reading in December in Uniondale?
Average temperature in December
Uniondale, NY
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in December: 36.1°F
The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).
Average pressure in December
Uniondale, NY
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Uniondale, NY
- Average wind speed in December: 12.5mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).
Average humidity in December
Uniondale, NY
- Average humidity in December: 74%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (71%).
Average rainfall in December
Uniondale, NY
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is July (0.98").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in December
Uniondale, NY
- Average rainfall days in December: 9.7 days
The month with the highest number of rainy days is July (12.4 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in December
Uniondale, NY
- Average snowfall in December: 0.35"
The month with the highest snowfall is January (0.43").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in December
Uniondale, NY
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is January (4.2 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
Uniondale, 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: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Uniondale, NY
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (15.1 days).
Average UV index in December
Uniondale, 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
Uniondale, 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
Uniondale, 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).
Uniondale, New York, USA
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