December weather forecast
Central Valley, NY

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Weather in December

December, the first month of the winter in Central Valley, is also an icy month, with an average temperature ranging between max 38.8°F (3.8°C) and min 27.3°F (-2.6°C).

Temperature

With the onset of December, Central Valley's average high-temperature adjusts, receding from November's chilly 48.6°F (9.2°C) to a cold 38.8°F (3.8°C). Central Valley, in the month of December, anticipates a consistent average low-temperature of 27.3°F (-2.6°C).

Humidity

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

Rainfall

In December, the rain falls for 8.4 days. Throughout December, 2.32" (59mm) of precipitation is accumulated. In Central Valley, during the entire year, the rain falls for 141.2 days and collects up to 25" (635mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Central Valley, New York, in December, during 4.9 snowfall days, 2.83" (72mm) of snow is typically accumulated. In Central Valley, during the entire year, snow falls for 28.3 days and aggregates up to 17.68" (449mm) of snow.

Daylight

December has the shortest days of the year in Central Valley, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:03 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:37 pm EST.

Sunshine

The average sunshine in December in Central Valley is 4.7h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Central Valley. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 2 suggests this advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
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Frequently asked questions

How cold is it in Central Valley in December?

The average high-temperature and low-temperature during December are 38.8°F (3.8°C) and 27.3°F (-2.6°C) respectively. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is evaluated at 86°F (30°C).

What is the most humid month in Central Valley?

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

What is the average humidity in December in Central Valley?

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

How much does it rain in Central Valley in December?

In December, the rain falls for 8.4 days. Throughout December, 2.32" (59mm) of precipitation is accumulated.

How much does it snow in Central Valley in December?

In Central Valley, New York, during December, snow falls for 4.9 days and regularly aggregates up to 2.83" (72mm) of snow.

What is the month with the shortest days in Central Valley?

With an average of 9h and 18min of daylight, December has the shortest days of the year in Central Valley.

What is the average length of the day in December in Central Valley?

In December, the average day length in Central Valley is 9h and 15min.

When is the sunrise / sunset in December in Central Valley?

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 Central Valley, sunrise is at 7:22 am and sunset at 4:37 pm EST.

How many hours of sunshine does Central Valley have in December?

In Central Valley, the average sunshine duration in December is 4.7h.

What is the month with the lowest UV index in Central Valley?

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

How high is the UV index in December in Central Valley?

In Central Valley, New York, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability 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
Central Valley, NY

Average temperature in December - Central Valley, NY
  • Average high temperature in December: 38.8°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.3°F).

  • Average low temperature in December: 27.3°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

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Average pressure in December
Central Valley, NY

Average pressure in December - Central Valley, 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
Central Valley, NY

Average wind speed in December - Central Valley, NY
  • Average wind speed in December: 6.5mph

The windiest months (with the highest average wind speed) are January, February and March (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

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Average humidity in December
Central Valley, NY

Average humidity in December - Central Valley, 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
Central Valley, NY

Average rainfall in December - Central Valley, NY
  • Average rainfall in December: 2.32"

The wettest month (with the highest rainfall) is July (2.68").
The driest month (with the least rainfall) is January (1.46").

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Average rainfall days in December
Central Valley, NY

Average rainfall days in December - Central Valley, NY
  • Average rainfall days in December: 8.4 days

The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (5.5 days).

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Average snowfall in December
Central Valley, NY

Average snowfall in December - Central Valley, NY
  • Average snowfall in December: 2.83"

The month with the highest snowfall is February (4.29").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Central Valley, NY

Average snowfall days in December - Central Valley, NY
  • Average snowfall days in December: 4.9 days

The month with the highest number of snowfall days is February (7.7 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
Central Valley, NY

Average daylight in December / Average sunshine in December - Central Valley, 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 4min

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 30min).

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Average sunshine days in December
Central Valley, NY

Average sunshine days in December - Central Valley, NY
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is January (21 days).
The month with the least sunshine days is June (11.8 days).

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Average UV index in December
Central Valley, NY

Average UV index in December - Central Valley, 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
Central Valley, NY

Average cloud cover in December - Central Valley, NY
  • Average cloud cover in December: 48

The months with the most cloud cover are February and March (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 34).

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Average visibility in December
Central Valley, NY

Average visibility in December - Central Valley, NY
  • Average visibility in December: 6mi

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

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Central Valley, New York, USA

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