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
Observing a mild shift, the average high-temperature during December reduces from November's frosty 43.7°F (6.5°C) to an icy 32.9°F (0.5°C). The temperature during December sees a subtle transition from day to night, averaging a low of 24.4°F (-4.2°C).Humidity
In Henderson, New York, the average relative humidity in December is 84%.Rainfall
In Henderson, during December, the rain falls for 10.2 days and regularly aggregates up to 2.91" (74mm) of precipitation. Throughout the year, there are 158.6 rainfall days, and 30.39" (772mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall in Henderson is December, when snow falls for 16.4 days and typically aggregates up to 9.21" (234mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:19 am and sunset at 4:28 pm. On the last day of December, in Henderson, sunrise is at 7:38 am and sunset at 4:37 pm EST.
Sunshine
The average sunshine in December is 2.9h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: In December, the UV index of 1 transforms into the following advice:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How much does it rain in December?
What is the snowiest month?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Henderson have in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Henderson, NY
- Average high temperature in December: 32.9°F
The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is January (26.6°F).
- Average low temperature in December: 24.4°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (16°F).
Average pressure in December
Henderson, NY
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Henderson, NY
- Average wind speed in December: 10.6mph
The windiest month (with the highest average wind speed) is January (11mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in December
Henderson, NY
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are April and September (77%).
Average rainfall in December
Henderson, NY
- Average rainfall in December: 2.91"
The wettest month (with the highest rainfall) is October (3.23").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Henderson, NY
- Average rainfall days in December: 10.2 days
The month with the highest number of rainy days is October (17.4 days).
The months with the least rainy days are January and February (7 days).
Average snowfall in December
Henderson, NY
- Average snowfall in December: 9.21"
The month with the highest snowfall is December (9.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Henderson, NY
- Average snowfall days in December: 16.4 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Henderson, NY
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The months with the least sunshine are January and February (Average sunshine: 2h and 42min).
Average sunshine days in December
Henderson, NY
- Average sunshine days in December: 7.7 days
The month with the most sunshine days is September (15 days).
The months with the least sunshine days are January and February (7.3 days).
Average UV index in December
Henderson, NY
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Henderson, NY
- Average cloud cover in December: 70
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Henderson, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Henderson, New York, USA
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