December weather forecast
Mattydale, NY

Weather in December

December, the first month of the winter in Mattydale, is also a wintry month, with an average temperature varying between 25.3°F (-3.7°C) and 33.8°F (1°C).

Temperature

In December, the average high-temperature drops from a frosty 44.8°F (7.1°C) in November to a wintry 33.8°F (1°C). In Mattydale, the average low-temperature is 25.3°F (-3.7°C).

Humidity

In December, the average relative humidity is 85%.

Rainfall

In Mattydale, during 11.7 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. In Mattydale, during the entire year, the rain falls for 172.5 days and collects up to 26.97" (685mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Mattydale, during December, snow falls for 16.3 days and regularly aggregates up to 5.75" (146mm) of snow. Throughout the year, there are 80.2 snowfall days, and 27.28" (693mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Mattydale, with an average of 9h and 4min of daylight.
On the first day of December in Mattydale, New York, sunrise is at 7:16 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:39 pm EST.

Sunshine

In December, the average sunshine is 3h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 1 in December interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Mattydale?

In Mattydale, New York, in December, the average high-temperature is 33.8°F (1°C), and the average low-temperature is 25.3°F (-3.7°C).

What is the average humidity in December in Mattydale?

In Mattydale, the average relative humidity in December is 85%.

How many days does it rain in December in Mattydale?

In December, in Mattydale, the rain falls for 11.7 days. Throughout December, 2.09" (53mm) of precipitation is accumulated.

How much does it snow in Mattydale in December?

In December, in Mattydale, New York, it is snowing for 16.3 days. Throughout December, 5.75" (146mm) of snow is accumulated.

What is the month with the shortest days in Mattydale?

With an average of 9h and 4min of daylight, December has the shortest days of the year in Mattydale, New York.

What is the average length of the day in December in Mattydale?

The average day length in December in Mattydale, New York, is 9h and 4min.

When is the sunrise / sunset in December in Mattydale?

In December, on the first day of the month, sunrise is at 7:16 am and sunset at 4:30 pm. On the last day of the month, in Mattydale, sunrise is at 7:36 am and sunset at 4:39 pm EST.

How long on average sun shines in December in Mattydale?

The average sunshine duration in December in Mattydale, New York, is 3h.

What is the month with the lowest UV index in Mattydale?

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

How high is the UV index in December in Mattydale?

In Mattydale, the average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a low health risk 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
Mattydale, NY

Average temperature in December - Mattydale, NY
  • Average high temperature in December: 33.8°F

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in December: 25.3°F

The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).

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Average pressure in December
Mattydale, NY

Average pressure in December - Mattydale, 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).

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Average wind speed in December
Mattydale, NY

Average wind speed in December - Mattydale, NY
  • Average wind speed in December: 10.1mph

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).

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Average humidity in December
Mattydale, NY

Average humidity in December - Mattydale, NY
  • Average humidity in December: 85%

The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is April (78%).

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Average rainfall in December
Mattydale, NY

Average rainfall in December - Mattydale, NY
  • Average rainfall in December: 2.09"

The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is September (1.73").

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Average rainfall days in December
Mattydale, NY

Average rainfall days in December - Mattydale, NY
  • Average rainfall days in December: 11.7 days

The month with the highest number of rainy days is August (17.6 days).
The month with the least rainy days is February (8.8 days).

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Average snowfall in December
Mattydale, NY

Average snowfall in December - Mattydale, NY
  • Average snowfall in December: 5.75"

The month with the highest snowfall is February (6.1").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Mattydale, NY

Average snowfall days in December - Mattydale, NY
  • Average snowfall days in December: 16.3 days

The month with the highest number of snowfall days is January (20.3 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
Mattydale, NY

Average daylight in December / Average sunshine in December - Mattydale, NY
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 19min).
The month with the shortest days is December (Average daylight: 9h and 4min).

  • Average sunshine in December: 3h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).

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Average sunshine days in December
Mattydale, NY

Average sunshine days in December - Mattydale, NY
  • Average sunshine days in December: 6.6 days

The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is February (5.3 days).

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Average UV index in December
Mattydale, NY

Average UV index in December - Mattydale, 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, February and December (UV index 1).

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Average cloud cover in December
Mattydale, NY

Average cloud cover in December - Mattydale, NY
  • Average cloud cover in December: 70

The months with the most cloud cover are January and February (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 32).

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Average visibility in December
Mattydale, NY

Average visibility in December - Mattydale, NY
  • Average visibility in December: 5mi

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

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