December weather forecast
Thornton Grove, NY

Weather in December

The first month of the winter, December, is also a wintry month in Thornton Grove, New York, with temperature in the range of an average low of 25.3°F (-3.7°C) and an average high of 34.3°F (1.3°C).

Temperature

In December, the average high-temperature decreases from a chilly 44.6°F (7°C) in November to a wintry 34.3°F (1.3°C). In Thornton Grove, in December, the average low-temperature is 25.3°F (-3.7°C).

Humidity

In December, the average relative humidity is 86%.

Rainfall

In Thornton Grove, during December, the rain falls for 8.9 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Thornton Grove, during the entire year, the rain falls for 137.8 days and collects up to 13.74" (349mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Thornton Grove. In Thornton Grove, snow falls for 15.1 days, with typically accumulated 3.23" (82mm) of snow. In Thornton Grove, during the entire year, snow falls for 76.2 days and aggregates up to 16.93" (430mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 5min of daylight.
On the first day of December, sunrise is at 7:16 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:41 pm EST.

Sunshine

The average sunshine in December is 3h.

UV index

February and December, with an average maximum UV index of 1, are months with the lowest UV index in Thornton Grove. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 1 in December transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in December in Thornton Grove?

In December, the average relative humidity in Thornton Grove, New York, is 86%.

How many days does it rain in December in Thornton Grove?

In Thornton Grove, New York, in December, it is raining for 8.9 days, with typically 1.1" (28mm) of accumulated precipitation.

How many days does it snow in December in Thornton Grove?

In Thornton Grove, during December, snow falls for 15.1 days and regularly aggregates up to 3.23" (82mm) of snow.

What is the month with the shortest days in Thornton Grove?

December has the shortest days of the year in Thornton Grove, New York, with an average of 9h and 5min of daylight.

How many hours of daylight does Thornton Grove have in December?

The average day length in December in Thornton Grove is 9h and 5min.

What time are sunrise and sunset in December in Thornton Grove?

On the first day of December in Thornton Grove, sunrise is at 7:16 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:41 pm EST.

How many hours of sunshine does Thornton Grove have in December?

In Thornton Grove, New York, the average sunshine duration in December is 3h.

What are the months with the lowest UV index in Thornton Grove?

February and December, with an average maximum UV index of 1, are months with the lowest UV index in Thornton Grove.

What is the UV index intensity in December in Thornton Grove?

In Thornton Grove, the average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a low health threat from exposure to the Sun's UV radiation.

Average temperature in December
Thornton Grove, NY

Average temperature in December - Thornton Grove, NY
  • Average high temperature in December: 34.3°F

The warmest month (with the highest average high temperature) is July (78.4°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°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).

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Average pressure in December
Thornton Grove, NY

Average pressure in December - Thornton Grove, 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
Thornton Grove, NY

Average wind speed in December - Thornton Grove, NY
  • Average wind speed in December: 9.8mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (6mph).

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Average humidity in December
Thornton Grove, NY

Average humidity in December - Thornton Grove, NY
  • Average humidity in December: 86%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (79%).

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Average rainfall in December
Thornton Grove, NY

Average rainfall in December - Thornton Grove, NY
  • Average rainfall in December: 1.1"

The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is September (0.67").

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Average rainfall days in December
Thornton Grove, NY

Average rainfall days in December - Thornton Grove, NY
  • Average rainfall days in December: 8.9 days

The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is February (6.7 days).

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Average snowfall in December
Thornton Grove, NY

Average snowfall in December - Thornton Grove, NY
  • Average snowfall in December: 3.23"

The month with the highest snowfall is February (3.74").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Thornton Grove, NY

Average snowfall days in December - Thornton Grove, NY
  • Average snowfall days in December: 15.1 days

The month with the highest number of snowfall days is January (18.1 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
Thornton Grove, NY

Average daylight in December / Average sunshine in December - Thornton Grove, NY
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 15h and 17min).
The month with the shortest days is December (Average daylight: 9h and 5min).

  • Average sunshine in December: 3h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 2.5h).

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Average sunshine days in December
Thornton Grove, NY

Average sunshine days in December - Thornton Grove, NY
  • Average sunshine days in December: 10.5 days

The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is February (7.9 days).

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Average UV index in December
Thornton Grove, NY

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

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Average cloud cover in December
Thornton Grove, NY

Average cloud cover in December - Thornton Grove, NY
  • Average cloud cover in December: 70

The month with the most cloud cover is February (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 33).

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Average visibility in December
Thornton Grove, NY

Average visibility in December - Thornton Grove, NY
  • Average visibility in December: 5mi

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

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