December weather forecast
Sundown, NY

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Weather in December

December, the first month of the winter in Sundown, is also an icy month, with an average temperature fluctuating between 21°F (-6.1°C) and 32°F (0°C).

Temperature

Transition into December marks a drop in the average high-temperature, moving from 41.7°F (5.4°C) in November to a still icy 32°F (0°C). In the month of December, Sundown's average low-temperature falls to a freezing cold 21°F (-6.1°C).

Humidity

February and December, with an average relative humidity of 88%, are the most humid months in Sundown.

Rainfall

In December, the rain falls for 8.5 days. Throughout December, 3.07" (78mm) of precipitation is accumulated. Throughout the year, in Sundown, there are 157.3 rainfall days, and 37.91" (963mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. December is the month with the most snowfall in Sundown. Snow falls for 16.4 days and accumulates 10.91" (277mm) of snow.

Daylight

December has the shortest days of the year in Sundown, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:06 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:36 pm EST.

Sunshine

In December, the average sunshine is 2.9h.

UV index

January through March, November 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 low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 1 translates into these guidelines:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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Frequently asked questions

How cold is December in Sundown?

An average high-temperature, in December, in Sundown, is 32°F (0°C) and the average low-temperature is 21°F (-6.1°C).

What is the most humid month in Sundown?

The months with the highest humidity in Sundown, New York, are February and December, with an average relative humidity of 88%.

What is the average humidity in December in Sundown?

In Sundown, the average relative humidity in December is 88%.

How much does it rain in Sundown in December?

In December, the rain falls for 8.5 days. Throughout December, 3.07" (78mm) of precipitation is accumulated.

When does it snow the most in Sundown?

December is the month with the most snowfall in Sundown, New York. Snow falls for 16.4 days and accumulates 10.91" (277mm) of snow.

How many days does it snow in December in Sundown?

In December, in Sundown, New York, it is snowing for 16.4 days. Throughout December, 10.91" (277mm) of snow is accumulated.

What is the month with the shortest days in Sundown?

With an average of 9h and 12min of daylight, December has the shortest days of the year in Sundown.

How many hours of daylight does Sundown have in December?

The average day length in December is 9h and 11min.

When are sunrise and sunset in December in Sundown?

In December, on the first day of the month, sunrise is at 7:06 am and sunset at 4:27 pm. On the last day of the month, in Sundown, sunrise is at 7:25 am and sunset at 4:36 pm EST.

How many hours of sunshine does Sundown have in December?

The average sunshine duration in December in Sundown is 2.9h.

What are the months with the lowest UV index in Sundown?

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

How high is the UV index in December in Sundown?

In December, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a low health threat from exposure to the Sun's 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
Sundown, NY

Average temperature in December - Sundown, NY
  • Average high temperature in December: 32°F

The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (26.4°F).

  • Average low temperature in December: 21°F

The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

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Average pressure in December
Sundown, NY

Average pressure in December - Sundown, 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).

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Average wind speed in December
Sundown, NY

Average wind speed in December - Sundown, NY
  • Average wind speed in December: 7.5mph

The windiest months (with the highest average wind speed) are January and February (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in December
Sundown, NY

Average humidity in December - Sundown, NY
  • Average humidity in December: 88%

The months with the highest relative humidity are February and December (88%).
The month with the lowest relative humidity is July (80%).

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Average rainfall in December
Sundown, NY

Average rainfall in December - Sundown, NY
  • Average rainfall in December: 3.07"

The wettest month (with the highest rainfall) is July (4.02").
The driest month (with the least rainfall) is February (2.32").

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Average rainfall days in December
Sundown, NY

Average rainfall days in December - Sundown, NY
  • Average rainfall days in December: 8.5 days

The month with the highest number of rainy days is May (19.3 days).
The months with the least rainy days are January and February (6.3 days).

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Average snowfall in December
Sundown, NY

Average snowfall in December - Sundown, NY
  • Average snowfall in December: 10.91"

The month with the highest snowfall is December (10.91").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Sundown, NY

Average snowfall days in December - Sundown, NY
  • Average snowfall days in December: 16.4 days

The month with the highest number of snowfall days is February (17 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Sundown, 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: 2h and 5min

The month with the most sunshine is July (Average sunshine: 8h and 54min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).

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Average sunshine days in December
Sundown, NY

Average sunshine days in December - Sundown, NY
  • Average sunshine days in December: 10.5 days

The month with the most sunshine days is September (14.2 days).
The month with the least sunshine days is February (8.1 days).

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Average UV index in December
Sundown, NY

Average UV index in December - Sundown, 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, March, November and December (UV index 1).

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Average cloud cover in December
Sundown, NY

Average cloud cover in December - Sundown, NY
  • Average cloud cover in December: 73

The month with the most cloud cover is February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 48).

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Average visibility in December
Sundown, NY

Average visibility in December - Sundown, NY
  • Average visibility in December: 4mi

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

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Sundown, New York, USA

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