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
December signals a slight drop in average high-temperature, sliding from November's fresh 52.2°F (11.2°C) to a frosty 44.1°F (6.7°C). Wyandanch maintains a consistent average nighttime low-temperature of 36.9°F (2.7°C) throughout December.Humidity
In December, the average relative humidity is 74%.Rainfall
In Wyandanch, in December, it is raining for 12.3 days, with typically 3.78" (96mm) of accumulated precipitation. In Wyandanch, during the entire year, the rain falls for 157 days and collects up to 35.98" (914mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In December, it is snowing for 2.4 days. Throughout December, 1.34" (34mm) of snow is accumulated. In Wyandanch, during the entire year, snow falls for 14.4 days and aggregates up to 6.06" (154mm) of snow.Daylight
December has the shortest days of the year in Wyandanch, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 6:58 am and sunset at 4:26 pm. On the last day of December, sunrise is at 7:17 am and sunset at 4:36 pm EST.
Sunshine
In Wyandanch, the average sunshine in December is 5h.UV index
The months with the lowest UV index are January through March and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 2 during December translates into the following guidance:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in December?
What is the average humidity in December?
How much does it rain in Wyandanch in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Wyandanch have in December?
What time are sunrise and sunset in December in Wyandanch?
How many hours of sunshine does Wyandanch have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Wyandanch, NY
- Average high temperature in December: 44.1°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 36.9°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 (30.4°F).
Average pressure in December
Wyandanch, 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
Wyandanch, NY
- Average wind speed in December: 13.1mph
The windiest month (with the highest average wind speed) is January (13.6mph).
The calmest month (with the lowest average wind speed) is July (8.9mph).
Average humidity in December
Wyandanch, 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
Wyandanch, NY
- Average rainfall in December: 3.78"
The wettest month (with the highest rainfall) is July (3.98").
The driest month (with the least rainfall) is January (2.2").
Average rainfall days in December
Wyandanch, NY
- Average rainfall days in December: 12.3 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in December
Wyandanch, NY
- Average snowfall in December: 1.34"
The month with the highest snowfall is March (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Wyandanch, NY
- Average snowfall days in December: 2.4 days
The month with the highest number of snowfall days is February (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
Wyandanch, 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 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Wyandanch, NY
- Average sunshine days in December: 16.4 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in December
Wyandanch, 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
Wyandanch, 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
Wyandanch, 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).
Wyandanch, New York, USA
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