December weather forecast
Valley Stream, NY

Weather in December

December, the first month of the winter in Valley Stream, is still a chilly month, with temperature in the range of an average low of 36°F (2.2°C) and an average high of 43.5°F (6.4°C).

Temperature

In Valley Stream, the average high-temperature in December marginally drops from a fresh 51.6°F (10.9°C) in November to a chilly 43.5°F (6.4°C). The average low-temperature, is 36°F (2.2°C).

Humidity

In December, the average relative humidity is 75%.

Rainfall

In December, the rain falls for 10.7 days. Throughout December, 1.65" (42mm) of precipitation is accumulated. In Valley Stream, during the entire year, the rain falls for 135.3 days and collects up to 18.62" (473mm) of precipitation.

Snowfall

Months with snowfall are January through March, October through December. In Valley Stream, snow falls for 2.8 days, with typically accumulated 0.59" (15mm) of snow. In Valley Stream, during the entire year, snow falls for 15.8 days and aggregates up to 2.95" (75mm) of snow.

Daylight

December has the shortest days of the year in Valley Stream, with an average of 9h and 19min of daylight.
On the first day of December, sunrise is at 6:59 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:37 pm EST.

Sunshine

In Valley Stream, the average sunshine in December is 5h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Valley Stream. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Valley Stream?

In Valley Stream, New York, in December, the average high-temperature is 43.5°F (6.4°C), and the average low-temperature is 36°F (2.2°C). in July, the average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, is evaluated at 84.2°F (29°C).

What is the average humidity in December in Valley Stream?

In December, the average relative humidity in Valley Stream is 75%.

How much does it rain in Valley Stream in December?

In Valley Stream, New York, in December, it is raining for 10.7 days, with typically 1.65" (42mm) of accumulated precipitation.

How much does it snow in Valley Stream in December?

In Valley Stream, New York, in December, snow falls for 2.8 days, with typically accumulated 0.59" (15mm) of snow.

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

The month with the shortest days in Valley Stream is December, with an average of 9h and 19min of daylight.

How many hours of daylight does Valley Stream have in December?

The average day length in December in Valley Stream, New York, is 9h and 19min.

When are sunrise and sunset in December in Valley Stream?

In December, on the first day of the month, sunrise is at 6:59 am and sunset at 4:28 pm. On the last day of the month, in Valley Stream, New York, sunrise is at 7:18 am and sunset at 4:37 pm EST.

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

The average sunshine duration in December in Valley Stream is 5h.

What are the months with the lowest UV index in Valley Stream?

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

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

In December, the average daily maximum UV index is 2. A UV Index estimate 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
Valley Stream, NY

Average temperature in December - Valley Stream, NY
  • Average high temperature in December: 43.5°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in December: 36°F

The month with the highest average low temperature is August (71.1°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).

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Average pressure in December
Valley Stream, NY

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

Average wind speed in December - Valley Stream, NY
  • Average wind speed in December: 11.9mph

The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (8mph).

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Average humidity in December
Valley Stream, NY

Average humidity in December - Valley Stream, NY
  • Average humidity in December: 75%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (72%).

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Average rainfall in December
Valley Stream, NY

Average rainfall in December - Valley Stream, NY
  • Average rainfall in December: 1.65"

The wettest months (with the highest rainfall) are July and August (2.32").
The driest month (with the least rainfall) is January (0.91").

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Average rainfall days in December
Valley Stream, NY

Average rainfall days in December - Valley Stream, NY
  • Average rainfall days in December: 10.7 days

The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (7.3 days).

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Average snowfall in December
Valley Stream, NY

Average snowfall in December - Valley Stream, NY
  • Average snowfall in December: 0.59"

The month with the highest snowfall is March (1.02").
The months with the least snowfall are April, May, June, July, August and September (0").

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Average snowfall days in December
Valley Stream, NY

Average snowfall days in December - Valley Stream, NY
  • Average snowfall days in December: 2.8 days

The month with the highest number of snowfall days is January (4.6 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
Valley Stream, NY

Average daylight in December / Average sunshine in December - Valley Stream, NY
  • Average daylight in December: 9h and 19min

The month with the longest days is June (Average daylight: 15h and 2min).
The month with the shortest days is December (Average daylight: 9h and 19min).

  • Average sunshine in December: 5h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in December
Valley Stream, NY

Average sunshine days in December - Valley Stream, NY
  • Average sunshine days in December: 16.9 days

The month with the most sunshine days is January (19.8 days).
The month with the least sunshine days is July (13.6 days).

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Average UV index in December
Valley Stream, NY

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

Average cloud cover in December - Valley Stream, NY
  • Average cloud cover in December: 47

The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in December
Valley Stream, NY

Average visibility in December - Valley Stream, 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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