December weather forecast
Bayport, NY

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Weather in December

December, the first month of the winter in Bayport, is still a chilly month, with an average temperature varying between 37.2°F (2.9°C) and 44.1°F (6.7°C).

Temperature

With the arrival of December, Bayport notices a mild change in the average high-temperature, sliding from November's fresh 52.3°F (11.3°C) to a frosty 44.1°F (6.7°C). During December, nights cool slightly to an average low of 37.2°F (2.9°C).

Humidity

In December, the average relative humidity is 74%.

Rainfall

The month with the most rainfall in Bayport is December, when the rain falls for 12.3 days and typically aggregates up to 3.74" (95mm) of precipitation.

Snowfall

January through March, May, October and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 2.4 snowfall days, it receives 1.22" (31mm) of snow. Throughout the year, there are 14.7 snowfall days, and 6.14" (156mm) of snow is accumulated.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:57 am and sunset at 4:25 pm. On the last day of December, sunrise is at 7:16 am and sunset at 4:34 pm EST.

Sunshine

In Bayport, the average sunshine in December is 4.9h.

UV index

January through March and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily high UV index of 2 in December leads to these guidelines:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.

Frequently asked questions

How cold is it in December?

December temperatures vary between a high-temperature of 44.1°F (6.7°C) and a low-temperature of 37.2°F (2.9°C).

What is the average humidity in December in Bayport?

In Bayport, the average relative humidity in December is 74%.

What is the wettest month?

December is the month with the most rainfall in Bayport. Rain falls for 12.3 days and accumulates 3.74" (95mm) of precipitation.

How much does it rain in December?

In Bayport, during December, the rain falls for 12.3 days and regularly aggregates up to 3.74" (95mm) of precipitation.

When does it start snowing?

December is the first month it typically snows. Throughout December, in the average 2.4 snowfall days, it receives 1.22" (31mm) of snow.

What is the month with the shortest days?

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

What is the average length of the day in December?

The average day length in December is 9h and 19min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:57 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:34 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 4.9h.

When is the lowest UV index?

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

How high is the UV index in December?

In Bayport, 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
Bayport, NY

Average temperature in December - Bayport, NY
  • Average high temperature in December: 44.1°F

The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in December: 37.2°F

The month with the highest average low temperature is August (71.8°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).

Average pressure in December
Bayport, NY

Average pressure in December - Bayport, 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).

Average wind speed in December
Bayport, NY

Average wind speed in December - Bayport, NY
  • Average wind speed in December: 13.4mph

The windiest month (with the highest average wind speed) is January (13.8mph).
The calmest months (with the lowest average wind speed) are July and August (9mph).

Average humidity in December
Bayport, NY

Average humidity in December - Bayport, NY
  • Average humidity in December: 74%

The months with the highest relative humidity are May and June (78%).
The month with the lowest relative humidity is November (71%).

Average rainfall in December
Bayport, NY

Average rainfall in December - Bayport, NY
  • Average rainfall in December: 3.74"

The wettest month (with the highest rainfall) is December (3.74").
The driest month (with the least rainfall) is January (2.17").

Average rainfall days in December
Bayport, NY

Average rainfall days in December - Bayport, NY
  • Average rainfall days in December: 12.3 days

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
Bayport, NY

Average snowfall in December - Bayport, NY
  • Average snowfall in December: 1.22"

The month with the highest snowfall is March (2.13").
The months with the least snowfall are April, June, July, August, September and November (0").

Average snowfall days in December
Bayport, NY

Average snowfall days in December - Bayport, NY
  • Average snowfall days in December: 2.4 days

The month with the highest number of snowfall days is February (4.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Bayport, NY

Average daylight in December / Average sunshine in December - Bayport, NY
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 5min

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).

Average sunshine days in December
Bayport, NY

Average sunshine days in December - Bayport, NY
  • Average sunshine days in December: 16.9 days

The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is July (11.3 days).

Average UV index in December
Bayport, NY

Average UV index in December - Bayport, 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 and December (UV index 2).

Average cloud cover in December
Bayport, NY

Average cloud cover in December - Bayport, NY
  • Average cloud cover in December: 48

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in December
Bayport, NY

Average visibility in December - Bayport, 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).

Bayport, New York, USA

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