December weather forecast
Country Knolls, NY

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Weather in December

The first month of the winter, December, is also an icy month in Country Knolls, New York, with an average temperature ranging between max 34.3°F (1.3°C) and min 24.8°F (-4°C).

Temperature

A subtle decrease in the average high-temperature marks December, falling from November's frosty 45.3°F (7.4°C) to an icy 34.3°F (1.3°C). Country Knolls's nighttime temperature during December is consistently averaged at a freezing cold 24.8°F (-4°C).

Humidity

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

Rainfall

In December, in Country Knolls, New York, the rain falls for 11 days. Throughout December, 2.76" (70mm) of precipitation is accumulated. Throughout the year, there are 153.2 rainfall days, and 30.12" (765mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Country Knolls, in December, snow falls for 8.2 days, with typically accumulated 5.51" (140mm) of snow. Throughout the year, there are 49.1 snowfall days, and 28.74" (730mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 6min of daylight.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:21 pm. On the last day of December, in Country Knolls, sunrise is at 7:26 am and sunset at 4:30 pm EST.

Sunshine

In Country Knolls, the average sunshine in December is 4.3h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in Country Knolls?

The high-temperature during December is 34.3°F (1.3°C) and the low-temperature is 24.8°F (-4°C). In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is computed to be 86°F (30°C).

What is the average humidity in December in Country Knolls?

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

How many days does it rain in December in Country Knolls?

In December, the rain falls for 11 days. Throughout December, 2.76" (70mm) of precipitation is accumulated.

How much does it snow in Country Knolls in December?

In Country Knolls, New York, in December, snow falls for 8.2 days, with typically accumulated 5.51" (140mm) of snow.

What is the month with the shortest days in Country Knolls?

December has the shortest days of the year in Country Knolls, with an average of 9h and 6min of daylight.

What is the average length of the day in December in Country Knolls?

In Country Knolls, the average day length in December is 9h and 5min.

When is the sunrise / sunset in December in Country Knolls?

On the first day of December in Country Knolls, sunrise is at 7:07 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:30 pm EST.

How many hours of sunshine does Country Knolls have in December?

In December, the average sunshine duration is 4.3h.

When is the lowest UV index in Country Knolls?

The months with the lowest UV index in Country Knolls, New York, are January and December, with an average maximum UV index of 1.

What is the UV index intensity in December in Country Knolls?

In December, the average daily maximum UV index in Country Knolls, New York, is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe 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
Country Knolls, NY

Average temperature in December - Country Knolls, NY
  • Average high temperature in December: 34.3°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (28.4°F).

  • Average low temperature in December: 24.8°F

The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

Average pressure in December
Country Knolls, NY

Average pressure in December - Country Knolls, 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 (29.92"Hg).

Average wind speed in December
Country Knolls, NY

Average wind speed in December - Country Knolls, NY
  • Average wind speed in December: 7.3mph

The windiest months (with the highest average wind speed) are January and April (7.7mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in December
Country Knolls, NY

Average humidity in December - Country Knolls, NY
  • Average humidity in December: 81%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (73%).

Average rainfall in December
Country Knolls, NY

Average rainfall in December - Country Knolls, NY
  • Average rainfall in December: 2.76"

The wettest month (with the highest rainfall) is October (3.07").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in December
Country Knolls, NY

Average rainfall days in December - Country Knolls, NY
  • Average rainfall days in December: 11 days

The months with the highest number of rainy days are April and May (16.1 days).
The month with the least rainy days is February (8.6 days).

Average snowfall in December
Country Knolls, NY

Average snowfall in December - Country Knolls, NY
  • Average snowfall in December: 5.51"

The month with the highest snowfall is January (8.19").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Country Knolls, NY

Average snowfall days in December - Country Knolls, NY
  • Average snowfall days in December: 8.2 days

The month with the highest number of snowfall days is January (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Country Knolls, NY

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

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 4h and 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).

Average sunshine days in December
Country Knolls, NY

Average sunshine days in December - Country Knolls, NY
  • Average sunshine days in December: 14.3 days

The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is February (11.3 days).

Average UV index in December
Country Knolls, NY

Average UV index in December - Country Knolls, NY
  • Average UV index in December: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in December
Country Knolls, NY

Average cloud cover in December - Country Knolls, NY
  • Average cloud cover in December: 54

The month with the most cloud cover is February (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 32).

Average visibility in December
Country Knolls, NY

Average visibility in December - Country Knolls, NY
  • Average visibility in December: 6mi

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

Country Knolls, New York, USA

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