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's onset corresponds with a shift in the average high-temperature, moving from a chilly 45.3°F (7.4°C) in November to a wintry 34.7°F (1.5°C). Throughout the month of December, Castleton-on-Hudson observes an average nighttime temperature of 24.1°F (-4.4°C).Humidity
In Castleton-on-Hudson, New York, the average relative humidity in December is 82%.Rainfall
In December, the rain falls for 10.3 days. Throughout December, 2.2" (56mm) of precipitation is accumulated. In Castleton-on-Hudson, during the entire year, the rain falls for 151.6 days and collects up to 28.78" (731mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Castleton-on-Hudson. In Castleton-on-Hudson, in December, during 7.8 snowfall days, 4.61" (117mm) of snow is typically accumulated. In Castleton-on-Hudson, during the entire year, snow falls for 41.1 days and aggregates up to 18.9" (480mm) of snow.Daylight
December has the shortest days of the year in Castleton-on-Hudson, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:05 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:31 pm EST.
Sunshine
In December, the average sunshine is 4.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Castleton-on-Hudson. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Frequently asked questions
How cold is December in Castleton-on-Hudson?
What is the average humidity in December in Castleton-on-Hudson?
How many days does it rain in December in Castleton-on-Hudson?
How many days does it snow in December in Castleton-on-Hudson?
What is the month with the shortest days in Castleton-on-Hudson?
What is the average length of the day in December in Castleton-on-Hudson?
When are sunrise and sunset in December in Castleton-on-Hudson?
How many hours of sunshine does Castleton-on-Hudson have in December?
What is the month with the lowest UV index in Castleton-on-Hudson?
What is the UV index intensity in December in Castleton-on-Hudson?
Average temperature in December
Castleton-on-Hudson, NY
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in December
Castleton-on-Hudson, 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 (29.92"Hg).
Average wind speed in December
Castleton-on-Hudson, NY
- Average wind speed in December: 7.9mph
The windiest months (with the highest average wind speed) are January, February and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Castleton-on-Hudson, NY
- Average humidity in December: 82%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Castleton-on-Hudson, NY
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in December
Castleton-on-Hudson, NY
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in December
Castleton-on-Hudson, NY
- Average snowfall in December: 4.61"
The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Castleton-on-Hudson, NY
- Average snowfall days in December: 7.8 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Castleton-on-Hudson, NY
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in December
Castleton-on-Hudson, NY
- Average sunshine days in December: 15.9 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in December
Castleton-on-Hudson, NY
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Castleton-on-Hudson, NY
- Average cloud cover in December: 55
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in December
Castleton-on-Hudson, NY
- Average visibility in December: 6mi
The months with the highest visibility are April, July, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, August, September and October (5mi).
Castleton-on-Hudson, New York, USA
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