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 is characterized by a reduction in the average high-temperature, from a frosty 46.6°F (8.1°C) in November to a cold 36.1°F (2.3°C). During December, Willow observes a consistent average nighttime temperature of 25°F (-3.9°C).Humidity
February and December, with an average relative humidity of 82%, are the most humid months in Willow.Rainfall
In Willow, in December, during 13.4 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. Throughout the year, there are 171.2 rainfall days, and 27.99" (711mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Willow, in December, during 9.9 snowfall days, 4.92" (125mm) of snow is typically accumulated. In Willow, during the entire year, snow falls for 52.3 days and aggregates up to 23.78" (604mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 7:06 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:35 pm EST.
Sunshine
In Willow, the average sunshine in December is 4.9h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 1 during December translates into the following directions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What are the most humid months?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in Willow in December?
What is the month with the shortest days?
How many hours of daylight does Willow have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Willow have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Willow, NY
- Average high temperature in December: 36.1°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 25°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in December
Willow, NY
- Average pressure in December: 30.06"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
Willow, NY
- Average wind speed in December: 5.9mph
The windiest month (with the highest average wind speed) is March (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Willow, NY
- Average humidity in December: 82%
The months with the highest relative humidity are February and December (82%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall in December
Willow, NY
- Average rainfall in December: 2.52"
The wettest month (with the highest rainfall) is October (2.99").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in December
Willow, NY
- Average rainfall days in December: 13.4 days
The month with the highest number of rainy days is April (17.6 days).
The month with the least rainy days is September (11.1 days).
Average snowfall in December
Willow, NY
- Average snowfall in December: 4.92"
The month with the highest snowfall is February (6.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Willow, NY
- Average snowfall days in December: 9.9 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Willow, NY
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in December
Willow, NY
- Average sunshine days in December: 12.3 days
The month with the most sunshine days is September (16.3 days).
The month with the least sunshine days is February (9.7 days).
Average UV index in December
Willow, NY
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Willow, NY
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in December
Willow, NY
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Willow, New York, USA
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