December weather forecastYorktown Heights, NY
December
Weather in December
The first month of the winter, December, is still a cold month in Yorktown Heights, New York, with temperature in the range of an average low of 30.2°F (-1°C) and an average high of 40.1°F (4.5°C).Temperature
The arrival of December corresponds with a temperature reduction, down from November's cool 50°F (10°C) to a wintry 40.1°F (4.5°C). During December, Yorktown Heights's temperature averages to a freezing cold 30.2°F (-1°C) at night.Humidity
In Yorktown Heights, the average relative humidity in December is 77%.Rainfall
In Yorktown Heights, during December, the rain falls for 10 days and regularly aggregates up to 2.28" (58mm) of precipitation. In Yorktown Heights, during the entire year, the rain falls for 144.2 days and collects up to 22.32" (567mm) of precipitation.Snowfall
Months with snowfall in Yorktown Heights, New York, are January through May, October through December. In Yorktown Heights, New York, in December, during 4.3 snowfall days, 1.65" (42mm) of snow is typically accumulated. In Yorktown Heights, New York, during the entire year, snow falls for 23.1 days and aggregates up to 9.02" (229mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Yorktown Heights.On the first day of the month, sunrise is at 7:02 am and sunset at 4:26 pm. On the last day of December, in Yorktown Heights, sunrise is at 7:20 am and sunset at 4:36 pm EST.
Sunshine
In December, the average sunshine in Yorktown Heights is 4.9h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 suggests these recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Yorktown Heights, NY
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34.5°F).
- Average low temperature in December: 30.2°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in December
Yorktown Heights, 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
Yorktown Heights, NY
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Yorktown Heights, NY
- Average humidity in December: 77%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Yorktown Heights, NY
- Average rainfall in December: 2.28"
The wettest month (with the highest rainfall) is July (2.68").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days in December
Yorktown Heights, NY
- Average rainfall days in December: 10 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in December
Yorktown Heights, NY
- Average snowfall in December: 1.65"
The month with the highest snowfall is March (2.95").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Yorktown Heights, NY
- Average snowfall days in December: 4.3 days
The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Yorktown Heights, NY
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Yorktown Heights, NY
- Average sunshine days in December: 17.7 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is June (12.1 days).
Average UV index in December
Yorktown Heights, 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, November and December (UV index 2).
Average cloud cover in December
Yorktown Heights, NY
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Yorktown Heights, 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).
