December weather forecast
Millbrook, NY

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Weather in December

December, the first month of the winter in Millbrook, is also an icy month, with temperature in the range of an average high of 37.2°F (2.9°C) and an average low of 26.1°F (-3.3°C).

Temperature

The arrival of December corresponds with a reduction in the average high-temperature, down from November's chilly 47.3°F (8.5°C) to an icy 37.2°F (2.9°C). Millbrook's average low-temperature is measured at a freezing cold 26.1°F (-3.3°C) during December.

Humidity

February and December, with an average relative humidity of 81%, are the most humid months in Millbrook.

Rainfall

In December, the rain falls for 11.6 days. Throughout December, 3.31" (84mm) of precipitation is accumulated. Throughout the year, there are 160.1 rainfall days, and 32.99" (838mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Millbrook, in December, snow falls for 7.5 days, with typically accumulated 3.58" (91mm) of snow. In Millbrook, during the entire year, snow falls for 41.2 days and aggregates up to 20.28" (515mm) of snow.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:03 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:34 pm EST.

Sunshine

The average sunshine in December in Millbrook is 4.5h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.
Note: A daily high UV index of 1 in December leads to these guidelines:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
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Frequently asked questions

How cold is December in Millbrook?

The high-temperature, in December, in Millbrook, is 37.2°F (2.9°C), while the low-temperature averages to 26.1°F (-3.3°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is evaluated at 87.8°F (31°C).

What are the most humid months in Millbrook?

February and December, with an average relative humidity of 81%, are most humid months in Millbrook, New York.

What is the average humidity in December in Millbrook?

The average relative humidity in December in Millbrook is 81%.

How much does it rain in Millbrook in December?

In Millbrook, in December, it is raining for 11.6 days, with typically 3.31" (84mm) of accumulated precipitation.

How much does it snow in Millbrook in December?

In Millbrook, in December, during 7.5 snowfall days, 3.58" (91mm) of snow is typically accumulated.

What is the month with the shortest days in Millbrook?

December has the shortest days of the year, with an average of 9h and 12min of daylight.

How many hours of daylight does Millbrook have in December?

In Millbrook, the average day length in December is 9h and 12min.

When are sunrise and sunset in December in Millbrook?

In December, on the first day of the month, sunrise is at 7:03 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:34 pm EST.

How long on average sun shines in December in Millbrook?

The average sunshine duration in December is 4.5h.

When is the lowest UV index in Millbrook?

December is the month with the lowest UV index in Millbrook, New York, with an average maximum UV index of 1.

How high is the UV index in December in Millbrook?

In Millbrook, New York, the average daily maximum UV index in December is 1. 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
Millbrook, NY

Average temperature in December - Millbrook, NY
  • Average high temperature in December: 37.2°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in December: 26.1°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).

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Average pressure in December
Millbrook, NY

Average pressure in December - Millbrook, NY
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Millbrook, NY

Average wind speed in December - Millbrook, NY
  • Average wind speed in December: 6.9mph

The windiest month (with the highest average wind speed) is March (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in December
Millbrook, NY

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

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

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Average rainfall in December
Millbrook, NY

Average rainfall in December - Millbrook, NY
  • Average rainfall in December: 3.31"

The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is September (2.01").

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Average rainfall days in December
Millbrook, NY

Average rainfall days in December - Millbrook, NY
  • Average rainfall days in December: 11.6 days

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is January (8.1 days).

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Average snowfall in December
Millbrook, NY

Average snowfall in December - Millbrook, NY
  • Average snowfall in December: 3.58"

The month with the highest snowfall is February (5.16").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Millbrook, NY

Average snowfall days in December - Millbrook, NY
  • Average snowfall days in December: 7.5 days

The month with the highest number of snowfall days is February (10.6 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
Millbrook, NY

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

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 4h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

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Average sunshine days in December
Millbrook, NY

Average sunshine days in December - Millbrook, NY
  • Average sunshine days in December: 15 days

The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is June (11.2 days).

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Average UV index in December
Millbrook, NY

Average UV index in December - Millbrook, NY
  • Average UV index in December: 1

The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Millbrook, NY

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

The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 37).

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Average visibility in December
Millbrook, NY

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

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