December weather forecast
Swan Lake, NY

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Weather in December

December, the first month of the winter in Swan Lake, is also an icy month, with an average temperature varying between 23.9°F (-4.5°C) and 35.6°F (2°C).

Temperature

In Swan Lake, entering December brings a temperature decrement, reducing from November's frosty 45.3°F (7.4°C) to a wintry 35.6°F (2°C). December nights experience a consistent temperature drop to a subzero cold 23.9°F (-4.5°C).

Humidity

The months with the highest humidity are February and December, with an average relative humidity of 85%.

Rainfall

In Swan Lake, during December, the rain falls for 9.8 days and regularly aggregates up to 2.32" (59mm) of precipitation. In Swan Lake, during the entire year, the rain falls for 153.7 days and collects up to 26.73" (679mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Swan Lake. The month with the most snowfall is December, when snow falls for 8.1 days and typically aggregates up to 5.04" (128mm) 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 the month, sunrise is at 7:07 am and sunset at 4:29 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:38 pm EST.

Sunshine

In Swan Lake, New York, the average sunshine in December is 4.3h.

UV index

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 2 during December translates into these guidelines:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

Swan Lake in December has an average high-temperature of 35.6°F (2°C) and an average low-temperature of 23.9°F (-4.5°C). In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, is appraised at 86°F (30°C).

What are the most humid months?

February and December, with an average relative humidity of 85%, are most humid months.

What is the average humidity in December?

In December, the average relative humidity is 85%.

How much does it rain in December?

In Swan Lake, during December, the rain falls for 9.8 days and regularly aggregates up to 2.32" (59mm) of precipitation.

What is the snowiest month?

The month with the most snowfall is December, when snow falls for 8.1 days and typically aggregates up to 5.04" (128mm) of snow.

How many days does it snow in December?

In Swan Lake, in December, during 8.1 snowfall days, 5.04" (128mm) of snow is typically accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 12min of daylight.

What is the average length of the day in December?

In Swan Lake, the average day length in December is 9h and 13min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:07 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:38 pm EST.

How many hours of sunshine does Swan Lake have in December?

In Swan Lake, the average sunshine duration in December is 4.3h.

What is the month with the lowest UV index?

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2.

What is the UV index intensity in December in Swan Lake?

In Swan Lake, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
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
Swan Lake, NY

Average temperature in December - Swan Lake, NY
  • Average high temperature in December: 35.6°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in December: 23.9°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 (17.1°F).

Average pressure in December
Swan Lake, NY

Average pressure in December - Swan Lake, 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
Swan Lake, NY

Average wind speed in December - Swan Lake, NY
  • Average wind speed in December: 7.1mph

The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
Swan Lake, NY

Average humidity in December - Swan Lake, NY
  • Average humidity in December: 85%

The months with the highest relative humidity are February and December (85%).
The month with the lowest relative humidity is July (77%).

Average rainfall in December
Swan Lake, NY

Average rainfall in December - Swan Lake, NY
  • Average rainfall in December: 2.32"

The wettest month (with the highest rainfall) is May (2.8").
The driest months (with the least rainfall) are January and February (1.65").

Average rainfall days in December
Swan Lake, NY

Average rainfall days in December - Swan Lake, NY
  • Average rainfall days in December: 9.8 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (7.5 days).

Average snowfall in December
Swan Lake, NY

Average snowfall in December - Swan Lake, NY
  • Average snowfall in December: 5.04"

The month with the highest snowfall is December (5.04").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Swan Lake, NY

Average snowfall days in December - Swan Lake, NY
  • Average snowfall days in December: 8.1 days

The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Swan Lake, NY

Average daylight in December / Average sunshine in December - Swan Lake, 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).

Average sunshine days in December
Swan Lake, NY

Average sunshine days in December - Swan Lake, NY
  • Average sunshine days in December: 16.2 days

The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is May (10.8 days).

Average UV index in December
Swan Lake, NY

Average UV index in December - Swan Lake, NY
  • Average UV index in December: 2

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, February, March, October, November and December (UV index 2).

Average cloud cover in December
Swan Lake, NY

Average cloud cover in December - Swan Lake, NY
  • Average cloud cover in December: 55

The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 38).

Average visibility in December
Swan Lake, NY

Average visibility in December - Swan Lake, NY
  • Average visibility in December: 5mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (5mi).
The months with the lowest visibility are May and September (4mi).

Swan Lake, New York, USA

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