December weather forecast
Mount Kisco, NY

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Weather in December

The first month of the winter, December, is still a cold month in Mount Kisco, New York, with an average temperature ranging between max 40.1°F (4.5°C) and min 30.2°F (-1°C).

Temperature

December comes with a decrease in the average high-temperature, falling from a cool 50°F (10°C) in November to an icy 40.1°F (4.5°C). Throughout the December nights, Mount Kisco encounters a low-temperature of 30.2°F (-1°C).

Humidity

The average relative humidity in December in Mount Kisco, New York, is 77%.

Rainfall

In December, the rain falls for 10 days. Throughout December, 2.28" (58mm) of precipitation is accumulated. Throughout the year, there are 144.2 rainfall days, and 22.32" (567mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Mount Kisco, New York. In December, it is snowing for 4.3 days. Throughout December, 1.65" (42mm) of snow is accumulated. Throughout the year, there are 23.1 snowfall days, and 9.02" (229mm) of snow is accumulated.

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 7:01 am and sunset at 4:26 pm. On the last day of December, in Mount Kisco, New York, sunrise is at 7:20 am and sunset at 4:36 pm EST.

Sunshine

In Mount Kisco, 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. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
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Frequently asked questions

How cold does it get in Mount Kisco in December?

In December, the average high-temperature and low-temperature are 40.1°F (4.5°C) and 30.2°F (-1°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is evaluated at 86°F (30°C).

What is the average humidity in December in Mount Kisco?

In Mount Kisco, the average relative humidity in December is 77%.

How many days does it rain in December in Mount Kisco?

In Mount Kisco, New York, in December, it is raining for 10 days, with typically 2.28" (58mm) of accumulated precipitation.

How many days does it snow in December in Mount Kisco?

In December, in Mount Kisco, New York, it is snowing for 4.3 days. Throughout December, 1.65" (42mm) of snow is accumulated.

What is the month with the shortest days in Mount Kisco?

December has the shortest days of the year in Mount Kisco, New York, with an average of 9h and 18min of daylight.

What is the average length of the day in December in Mount Kisco?

In Mount Kisco, New York, the average day length in December is 9h and 16min.

What time are sunrise and sunset in December in Mount Kisco?

On the first day of December, sunrise is at 7:01 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:36 pm EST.

How long on average sun shines in December in Mount Kisco?

In December, the average sunshine duration is 4.9h.

What are the months with the lowest UV index in Mount Kisco?

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

What is the UV index reading in December in Mount Kisco?

The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk 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
Mount Kisco, NY

Average temperature in December - Mount Kisco, NY
  • Average high temperature in December: 40.1°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34.5°F).

  • Average low temperature in December: 30.2°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

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Average pressure in December
Mount Kisco, NY

Average pressure in December - Mount Kisco, 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
Mount Kisco, NY

Average wind speed in December - Mount Kisco, NY
  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in December
Mount Kisco, NY

Average humidity in December - Mount Kisco, NY
  • Average humidity in December: 77%

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in December
Mount Kisco, NY

Average rainfall in December - Mount Kisco, NY
  • Average rainfall in December: 2.28"

The wettest month (with the highest rainfall) is July (2.68").
The driest month (with the least rainfall) is February (1.18").

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Average rainfall days in December
Mount Kisco, NY

Average rainfall days in December - Mount Kisco, NY
  • Average rainfall days in December: 10 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (6.8 days).

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Average snowfall in December
Mount Kisco, NY

Average snowfall in December - Mount Kisco, NY
  • Average snowfall in December: 1.65"

The month with the highest snowfall is March (2.95").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Mount Kisco, NY

Average snowfall days in December - Mount Kisco, NY
  • Average snowfall days in December: 4.3 days

The month with the highest number of snowfall days is February (6.3 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
Mount Kisco, NY

Average daylight in December / Average sunshine in December - Mount Kisco, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in December
Mount Kisco, NY

Average sunshine days in December - Mount Kisco, NY
  • Average sunshine days in December: 17.7 days

The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is June (12.1 days).

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Average UV index in December
Mount Kisco, NY

Average UV index in December - Mount Kisco, 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
Mount Kisco, NY

Average cloud cover in December - Mount Kisco, NY
  • Average cloud cover in December: 47

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in December
Mount Kisco, NY

Average visibility in December - Mount Kisco, NY
  • Average visibility in December: 6mi

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

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Mount Kisco, New York, USA

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