December weather forecast
Castorland, NY

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Weather in December

The first month of the winter, December, is still a freezing cold month in Castorland, New York, with an average temperature varying between 22.1°F (-5.5°C) and 31.1°F (-0.5°C).

Temperature

In December, the average high-temperature decreases from an icy 41.9°F (5.5°C) in November to a freezing cold 31.1°F (-0.5°C). During the nights of December, Castorland records an average low-temperature of 22.1°F (-5.5°C), reflecting a modest decrease from daytime highs.

Humidity

In December, the average relative humidity is 87%.

Rainfall

In Castorland, during December, the rain falls for 10.9 days and regularly aggregates up to 3.78" (96mm) of precipitation. In Castorland, during the entire year, the rain falls for 174 days and collects up to 40.2" (1021mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Castorland, in December, snow falls for 18.4 days, with typically accumulated 12.76" (324mm) of snow. Throughout the year, there are 98.6 snowfall days, and 60.59" (1539mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 0min of daylight.
On the first day of December, sunrise is at 7:17 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:34 pm EST.

Sunshine

The average sunshine in December is 2.8h.

UV index

January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In December, an average UV index of 1 transforms into the following instructions:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

Castorland in December has an average high-temperature of 31.1°F (-0.5°C) and an average low-temperature of 22.1°F (-5.5°C).

What is the average humidity in December?

The average relative humidity in December is 87%.

How many days does it rain in December?

In Castorland, in December, during 10.9 rainfall days, 3.78" (96mm) of precipitation is typically accumulated.

How much does it snow in December?

In Castorland, during December, snow falls for 18.4 days and regularly aggregates up to 12.76" (324mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 0min of daylight.

How many hours of daylight does Castorland have in December?

In December, the average day length is 8h and 58min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:17 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:34 pm EST.

How many hours of sunshine does Castorland have in December?

In December, the average sunshine duration is 2.8h.

What is the month with the lowest UV index?

The months with the lowest UV index are January, February and December, with an average maximum UV index of 1.

What is the UV index intensity in December?

In Castorland, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Castorland, NY

Average temperature in December - Castorland, NY
  • Average high temperature in December: 31.1°F

The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (24.6°F).

  • Average low temperature in December: 22.1°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).

Average pressure in December
Castorland, NY

Average pressure in December - Castorland, 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
Castorland, NY

Average wind speed in December - Castorland, NY
  • Average wind speed in December: 9.3mph

The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

Average humidity in December
Castorland, NY

Average humidity in December - Castorland, NY
  • Average humidity in December: 87%

The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (78%).

Average rainfall in December
Castorland, NY

Average rainfall in December - Castorland, NY
  • Average rainfall in December: 3.78"

The wettest month (with the highest rainfall) is October (4.17").
The driest month (with the least rainfall) is September (2.32").

Average rainfall days in December
Castorland, NY

Average rainfall days in December - Castorland, NY
  • Average rainfall days in December: 10.9 days

The month with the highest number of rainy days is August (18.9 days).
The month with the least rainy days is January (7.6 days).

Average snowfall in December
Castorland, NY

Average snowfall in December - Castorland, NY
  • Average snowfall in December: 12.76"

The month with the highest snowfall is January (14.09").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Castorland, NY

Average snowfall days in December - Castorland, NY
  • Average snowfall days in December: 18.4 days

The month with the highest number of snowfall days is January (22 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Castorland, NY

Average daylight in December / Average sunshine in December - Castorland, 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 months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 2h and 24min).

Average sunshine days in December
Castorland, NY

Average sunshine days in December - Castorland, NY
  • Average sunshine days in December: 7.4 days

The month with the most sunshine days is September (13.5 days).
The month with the least sunshine days is February (4.7 days).

Average UV index in December
Castorland, NY

Average UV index in December - Castorland, NY
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).

Average cloud cover in December
Castorland, NY

Average cloud cover in December - Castorland, NY
  • Average cloud cover in December: 72

The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 36).

Average visibility in December
Castorland, NY

Average visibility in December - Castorland, NY
  • Average visibility in December: 5mi

The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).

Castorland, New York, USA

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