December weather forecast
Chestnut Ridge, PA

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Weather in December

The first month of the winter, December, is also a wintry month in Chestnut Ridge, Pennsylvania, with temperature in the range of an average low of 29.3°F (-1.5°C) and an average high of 40.6°F (4.8°C).

Temperature

The shift to December brings a decrease in the average high-temperature, falling from a fresh 50°F (10°C) in November to a wintry 40.6°F (4.8°C). During the month of December, the temperature in Chestnut Ridge falls to an average of 29.3°F (-1.5°C).

Humidity

In December, the average relative humidity in Chestnut Ridge is 83%.

Rainfall

In Chestnut Ridge, in December, during 13 rainfall days, 3.19" (81mm) of precipitation is typically accumulated. Throughout the year, in Chestnut Ridge, there are 187.8 rainfall days, and 36.46" (926mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In December, it is snowing for 13.1 days. Throughout December, 6.14" (156mm) of snow is accumulated. Throughout the year, there are 63.1 snowfall days, and 32.32" (821mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:22 am and sunset at 4:54 pm. On the last day of December, sunrise is at 7:40 am and sunset at 5:04 pm EST.

Sunshine

In Chestnut Ridge, the average sunshine in December is 3.8h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 1 in December transforms into the following instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

Is December cold in Chestnut Ridge?

In December, in Chestnut Ridge, the average high-temperature is 40.6°F (4.8°C), and the average low-temperature is 29.3°F (-1.5°C). In August, the average heat index (a.k.a. 'real feel', '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, Pennsylvania, the average relative humidity in December is 83%.

How many days does it rain in December in Chestnut Ridge?

In Chestnut Ridge, Pennsylvania, during December, the rain falls for 13 days and regularly aggregates up to 3.19" (81mm) of precipitation.

How much does it snow in Chestnut Ridge in December?

In December, in Chestnut Ridge, Pennsylvania, it is snowing for 13.1 days. Throughout December, 6.14" (156mm) of snow is accumulated.

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

With an average of 9h and 24min of daylight, December has the shortest days of the year in Chestnut Ridge, Pennsylvania.

What is the average length of the day in December in Chestnut Ridge?

In Chestnut Ridge, the average day length in December is 9h and 23min.

What time are sunrise and sunset in December in Chestnut Ridge?

On the first day of December in Chestnut Ridge, sunrise is at 7:22 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:04 pm EST.

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

In Chestnut Ridge, Pennsylvania, the average sunshine duration in December is 3.8h.

When is the lowest UV index in Chestnut Ridge?

The month with the lowest UV index in Chestnut Ridge, Pennsylvania, is December, with an average maximum UV index of 1.

What is the UV index reading in December in Chestnut Ridge?

In December, the average daily maximum UV index in Chestnut Ridge is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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, PA

Average temperature in December - Chestnut Ridge, PA
  • Average high temperature in December: 40.6°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (34.5°F).

  • Average low temperature in December: 29.3°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in December
Chestnut Ridge, PA

Average pressure in December - Chestnut Ridge, PA
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in December
Chestnut Ridge, PA

Average wind speed in December - Chestnut Ridge, PA
  • Average wind speed in December: 6.8mph

The windiest month (with the highest average wind speed) is January (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in December
Chestnut Ridge, PA

Average humidity in December - Chestnut Ridge, PA
  • Average humidity in December: 83%

The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are July and August (77%).

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Average rainfall in December
Chestnut Ridge, PA

Average rainfall in December - Chestnut Ridge, PA
  • Average rainfall in December: 3.19"

The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is September (2.17").

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Average rainfall days in December
Chestnut Ridge, PA

Average rainfall days in December - Chestnut Ridge, PA
  • Average rainfall days in December: 13 days

The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is January (11.1 days).

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Average snowfall in December
Chestnut Ridge, PA

Average snowfall in December - Chestnut Ridge, PA
  • Average snowfall in December: 6.14"

The month with the highest snowfall is February (7.76").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Chestnut Ridge, PA

Average snowfall days in December - Chestnut Ridge, PA
  • Average snowfall days in December: 13.1 days

The month with the highest number of snowfall days is January (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
Chestnut Ridge, PA

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 3h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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Average sunshine days in December
Chestnut Ridge, PA

Average sunshine days in December - Chestnut Ridge, PA
  • Average sunshine days in December: 10 days

The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is January (6.7 days).

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Average UV index in December
Chestnut Ridge, PA

Average UV index in December - Chestnut Ridge, PA
  • Average UV index in December: 1

The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Chestnut Ridge, PA

Average cloud cover in December - Chestnut Ridge, PA
  • Average cloud cover in December: 63

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in December
Chestnut Ridge, PA

Average visibility in December - Chestnut Ridge, PA
  • Average visibility in December: 5mi

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

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Chestnut Ridge, Pennsylvania, USA

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