December weather forecast
Monsey, NY

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Weather in December

December, the first month of the winter in Monsey, is also a wintry month, with an average temperature varying between 40.3°F (4.6°C) and 29.3°F (-1.5°C).

Temperature

With the onset of December, Monsey experiences a modest temperature adjustment, with the average high-temperature receding from a fresh 50.2°F (10.1°C) in November to a wintry 40.3°F (4.6°C). In the month of December, the nighttime temperature dips to a steady average of 29.3°F (-1.5°C).

Humidity

The average relative humidity in December is 78%.

Rainfall

In December, the rain falls for 9.5 days. Throughout December, 2.6" (66mm) of precipitation is accumulated. In Monsey, New York, during the entire year, the rain falls for 143.9 days and collects up to 25.59" (650mm) of precipitation.

Snowfall

Months with snowfall in Monsey are January through April, October through December. In Monsey, in December, during 3.2 snowfall days, 2.09" (53mm) of snow is typically accumulated. In Monsey, during the entire year, snow falls for 22.9 days and aggregates up to 14.33" (364mm) of snow.

Daylight

The month with the shortest days is December, 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, in Monsey, sunrise is at 7:21 am and sunset at 4:37 pm EST.

Sunshine

In December, the average sunshine in Monsey 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. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In December, an average UV index of 2 transforms into the following instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

How cold is it in Monsey in December?

The high-temperature, in December, in Monsey, is 40.3°F (4.6°C), while the low-temperature averages to 29.3°F (-1.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is calculated to be 87.8°F (31°C).

What is the average humidity in December in Monsey?

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

How much does it rain in Monsey in December?

In Monsey, New York, in December, during 9.5 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

How many days does it snow in December in Monsey?

In Monsey, in December, during 3.2 snowfall days, 2.09" (53mm) of snow is typically accumulated.

What is the month with the shortest days in Monsey?

December has the shortest days of the year, with an average of 9h and 18min of daylight.

What is the average length of the day in December in Monsey?

The average day length in December in Monsey, New York, is 9h and 16min.

When are sunrise and sunset in December in Monsey?

On the first day of December in Monsey, sunrise is at 7:02 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:37 pm EST.

How long on average sun shines in December in Monsey?

The average sunshine duration in December in Monsey is 4.9h.

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

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

What is the UV index intensity in December in Monsey?

In December, the average daily maximum UV index in Monsey is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability 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
Monsey, NY

Average temperature in December - Monsey, 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
Monsey, NY

Average pressure in December - Monsey, 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
Monsey, NY

Average wind speed in December - Monsey, 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
Monsey, NY

Average humidity in December - Monsey, 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
Monsey, NY

Average rainfall in December - Monsey, 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
Monsey, NY

Average rainfall days in December - Monsey, 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
Monsey, NY

Average snowfall in December - Monsey, 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
Monsey, NY

Average snowfall days in December - Monsey, 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
Monsey, NY

Average daylight in December / Average sunshine in December - Monsey, 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
Monsey, NY

Average sunshine days in December - Monsey, 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
Monsey, NY

Average UV index in December - Monsey, 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
Monsey, NY

Average cloud cover in December - Monsey, 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
Monsey, NY

Average visibility in December - Monsey, 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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Monsey, New York, USA

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