December weather forecast
Mountainville, NY

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Weather in December

The first month of the winter, December, is also a wintry month in Mountainville, New York, with an average temperature fluctuating between 26.8°F (-2.9°C) and 38.5°F (3.6°C).

Temperature

The start of December comes with a reduction in the average high-temperature, receding from a chilly 48.4°F (9.1°C) in November to a wintry 38.5°F (3.6°C). Mountainville experiences an average low-temperature of 26.8°F (-2.9°C) in the month of December.

Humidity

The months with the highest humidity are February, October and December, with an average relative humidity of 81%.

Rainfall

In Mountainville, during December, the rain falls for 8.7 days and regularly aggregates up to 2.52" (64mm) of precipitation. In Mountainville, during the entire year, the rain falls for 135.6 days and collects up to 25.39" (645mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Mountainville, in December, during 4.8 snowfall days, 3.03" (77mm) of snow is typically accumulated. Throughout the year, in Mountainville, there are 27.2 snowfall days, and 17.2" (437mm) of snow is accumulated.

Daylight

The month with the shortest days in Mountainville is December, with an average of 9h and 12min of daylight.
On the first day of the month, sunrise is at 7:03 am and sunset at 4:27 pm. On the last day of December, in Mountainville, sunrise is at 7:22 am and sunset at 4:36 pm EST.

Sunshine

In December, the average sunshine in Mountainville, New York, is 4.6h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum UV index of 2 in December translates into the following recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
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Frequently asked questions

Is December cold in Mountainville?

An average high-temperature, in December, in Mountainville, is 38.5°F (3.6°C) and the average low-temperature is 26.8°F (-2.9°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is estimated at 87.8°F (31°C).

What is the most humid month in Mountainville?

The months with the highest humidity in Mountainville are February, October and December, with an average relative humidity of 81%.

What is the average humidity in December in Mountainville?

In December, the average relative humidity in Mountainville is 81%.

How much does it rain in Mountainville in December?

In Mountainville, New York, in December, it is raining for 8.7 days, with typically 2.52" (64mm) of accumulated precipitation.

How many days does it snow in December in Mountainville?

In December, in Mountainville, New York, it is snowing for 4.8 days. Throughout December, 3.03" (77mm) of snow is accumulated.

What is the month with the shortest days in Mountainville?

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

How many hours of daylight does Mountainville have in December?

In December, the average day length in Mountainville is 9h and 14min.

When is the sunrise / sunset in December in Mountainville?

In December, on the first day of the month, sunrise is at 7:03 am and sunset at 4:27 pm. On the last day of the month, in Mountainville, sunrise is at 7:22 am and sunset at 4:36 pm EST.

How long on average sun shines in December in Mountainville?

In Mountainville, New York, the average sunshine duration in December is 4.6h.

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

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Mountainville.

What is the UV index intensity in December in Mountainville?

In Mountainville, New York, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat 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
Mountainville, NY

Average temperature in December - Mountainville, NY
  • Average high temperature in December: 38.5°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (32.9°F).

  • Average low temperature in December: 26.8°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

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Average pressure in December
Mountainville, NY

Average pressure in December - Mountainville, 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
Mountainville, NY

Average wind speed in December - Mountainville, NY
  • Average wind speed in December: 6mph

The windiest months (with the highest average wind speed) are February and March (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in December
Mountainville, NY

Average humidity in December - Mountainville, NY
  • Average humidity in December: 81%

The months with the highest relative humidity are February, October and December (81%).
The month with the lowest relative humidity is April (74%).

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Average rainfall in December
Mountainville, NY

Average rainfall in December - Mountainville, NY
  • Average rainfall in December: 2.52"

The wettest month (with the highest rainfall) is October (2.64").
The driest months (with the least rainfall) are January and September (1.54").

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Average rainfall days in December
Mountainville, NY

Average rainfall days in December - Mountainville, NY
  • Average rainfall days in December: 8.7 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (5.6 days).

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Average snowfall in December
Mountainville, NY

Average snowfall in December - Mountainville, NY
  • Average snowfall in December: 3.03"

The month with the highest snowfall is January (4.37").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Mountainville, NY

Average snowfall days in December - Mountainville, NY
  • Average snowfall days in December: 4.8 days

The month with the highest number of snowfall days is February (6.9 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
Mountainville, NY

Average daylight in December / Average sunshine in December - Mountainville, NY
  • Average daylight in December: 9h and 1min

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 12min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days in December
Mountainville, NY

Average sunshine days in December - Mountainville, NY
  • Average sunshine days in December: 18.7 days

The month with the most sunshine days is January (20.6 days).
The months with the least sunshine days are May and June (13.5 days).

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Average UV index in December
Mountainville, NY

Average UV index in December - Mountainville, NY
  • Average UV index in December: 2

The months with the highest UV index are June 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
Mountainville, NY

Average cloud cover in December - Mountainville, NY
  • Average cloud cover in December: 51

The months with the most cloud cover are February, March and December (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 37).

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Average visibility in December
Mountainville, NY

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

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

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Mountainville, New York, USA

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