December weather forecast
Chestnut Ridge, NY

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Weather in December

The first month of the winter, December, is also an icy month in Chestnut Ridge, New York, with an average temperature varying between 40.3°F (4.6°C) and 29.3°F (-1.5°C).

Temperature

The arrival of December indicates a decrease in the average high-temperature, moving from a fresh 50.2°F (10.1°C) in November to an icy 40.3°F (4.6°C). During the month of December, Chestnut Ridge experiences a steady low-temperature average of 29.3°F (-1.5°C).

Humidity

In Chestnut Ridge, New York, the average relative humidity in December is 78%.

Rainfall

In Chestnut Ridge, in December, during 9.5 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. Throughout the year, there are 143.9 rainfall days, and 25.59" (650mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. In Chestnut Ridge, New York, in December, snow falls for 3.2 days, with typically accumulated 2.09" (53mm) of snow. Throughout the year, there are 22.9 snowfall days, and 14.33" (364mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:02 am and sunset at 4:28 pm. On the last day of December, sunrise is at 7:21 am and sunset at 4:37 pm EST.

Sunshine

In Chestnut Ridge, the average sunshine in December is 4.9h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Chestnut Ridge. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average maximum UV index of 2 in December leads to these recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Frequently asked questions

How cold is it in Chestnut Ridge in December?

An average high-temperature, in December, in Chestnut Ridge, is 40.3°F (4.6°C) and the average low-temperature is 29.3°F (-1.5°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 87.8°F (31°C).

What is the average humidity in December in Chestnut Ridge?

In Chestnut Ridge, the average relative humidity in December is 78%.

How much does it rain in Chestnut Ridge in December?

In Chestnut Ridge, New York, during December, the rain falls for 9.5 days and regularly aggregates up to 2.6" (66mm) of precipitation.

How much does it snow in Chestnut Ridge in December?

In Chestnut Ridge, during December, snow falls for 3.2 days and regularly aggregates up to 2.09" (53mm) of snow.

What is the month with the shortest days in Chestnut Ridge?

With an average of 9h and 18min of daylight, December has the shortest days of the year in Chestnut Ridge, New York.

How many hours of daylight does Chestnut Ridge have in December?

In December, the average day length in Chestnut Ridge is 9h and 17min.

When is the sunrise / sunset in December in Chestnut Ridge?

In December, on the first day of the month, sunrise is at 7:02 am and sunset at 4:28 pm. On the last day of the month, in Chestnut Ridge, New York, sunrise is at 7:21 am and sunset at 4:37 pm EST.

How many hours of sunshine does Chestnut Ridge have in December?

In December, the average sunshine duration in Chestnut Ridge, New York, is 4.9h.

When is the lowest UV index in Chestnut Ridge?

The months with the lowest UV index in Chestnut Ridge, New York, are January through March, November and December, with an average maximum UV index of 2.

How high is the UV index in December in Chestnut Ridge?

The average daily maximum UV index in December in Chestnut Ridge is 2. A UV Index 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
Chestnut Ridge, NY

Average temperature in December - Chestnut Ridge, NY
  • Average high temperature in December: 40.3°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (34.9°F).

  • Average low temperature in December: 29.3°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

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Average pressure in December
Chestnut Ridge, NY

Average pressure in December - Chestnut Ridge, 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
Chestnut Ridge, NY

Average wind speed in December - Chestnut Ridge, NY
  • Average wind speed in December: 7.1mph

The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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Average humidity in December
Chestnut Ridge, NY

Average humidity in December - Chestnut Ridge, NY
  • Average humidity in December: 78%

The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are July and August (71%).

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Average rainfall in December
Chestnut Ridge, NY

Average rainfall in December - Chestnut Ridge, NY
  • Average rainfall in December: 2.6"

The wettest month (with the highest rainfall) is July (2.76").
The driest month (with the least rainfall) is September (1.54").

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Average rainfall days in December
Chestnut Ridge, NY

Average rainfall days in December - Chestnut Ridge, NY
  • Average rainfall days in December: 9.5 days

The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (6.7 days).

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Average snowfall in December
Chestnut Ridge, NY

Average snowfall in December - Chestnut Ridge, NY
  • Average snowfall in December: 2.09"

The month with the highest snowfall is March (4.17").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Chestnut Ridge, NY

Average snowfall days in December - Chestnut Ridge, NY
  • Average snowfall days in December: 3.2 days

The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Chestnut Ridge, NY

Average daylight in December / Average sunshine in December - Chestnut Ridge, NY
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in December
Chestnut Ridge, NY

Average sunshine days in December - Chestnut Ridge, NY
  • Average sunshine days in December: 19 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (12.4 days).

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Average UV index in December
Chestnut Ridge, NY

Average UV index in December - Chestnut Ridge, NY
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in December
Chestnut Ridge, NY

Average cloud cover in December - Chestnut Ridge, NY
  • Average cloud cover in December: 48

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in December
Chestnut Ridge, NY

Average visibility in December - Chestnut Ridge, NY
  • Average visibility in December: 6mi

The months with the highest visibility are January, March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are February and May (5mi).

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Chestnut Ridge, New York, USA

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