December weather forecastCrompond, NY
December
Weather in December
The first month of the winter, December, is also a wintry month in Crompond, New York, with an average temperature varying between 39.9°F (4.4°C) and 28.8°F (-1.8°C).Temperature
With December's onset, the average high-temperature recedes from November's chilly 49.5°F (9.7°C) to an icy 39.9°F (4.4°C). The temperature lowers to an average of 28.8°F (-1.8°C) during December nights.Humidity
February, October and December, with an average relative humidity of 79%, are the most humid months.Rainfall
In December, the rain falls for 9.5 days. Throughout December, 3.11" (79mm) of precipitation is accumulated. Throughout the year, there are 148.4 rainfall days, and 30.55" (776mm) of precipitation is accumulated.Snowfall
Months with snowfall in Crompond are January through May, October through December. In Crompond, in December, during 4.7 snowfall days, 2.32" (59mm) of snow is typically accumulated. Throughout the year, in Crompond, New York, there are 24.4 snowfall days, and 12.87" (327mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Crompond.On the first day of December in Crompond, sunrise is at 7:02 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:36 pm EST.
Sunshine
In Crompond, the average sunshine in December 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 reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Crompond, NY
- Average high temperature in December: 39.9°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in December: 28.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in December
Crompond, 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
Crompond, NY
- Average wind speed in December: 6.8mph
The windiest months (with the highest average wind speed) are January and March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Crompond, NY
- Average humidity in December: 79%
The months with the highest relative humidity are February, October and December (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Crompond, NY
- Average rainfall in December: 3.11"
The wettest month (with the highest rainfall) is July (3.31").
The driest month (with the least rainfall) is February (1.81").
Average rainfall days in December
Crompond, NY
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in December
Crompond, NY
- Average snowfall in December: 2.32"
The month with the highest snowfall is March (3.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Crompond, NY
- Average snowfall days in December: 4.7 days
The month with the highest number of snowfall days is February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Crompond, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Crompond, NY
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in December
Crompond, NY
- Average UV index in December: 2
The months with the highest UV index are June 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
Crompond, NY
- Average cloud cover in December: 48
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Crompond, NY
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are February and May (5mi).
