December weather forecast and climate
New Haven, NY

The first month of the winter, December, is still a cold month in New Haven, New York, with temperature in the range of an average low of 26.4°F (-3.1°C) and an average high of 34.3°F (1.3°C).

Temperature

In New Haven, the average high-temperature in December decreases, from a chilly 44.2°F (6.8°C) in November, to a cold 34.3°F (1.3°C). The average low-temperature, in New Haven, New York, is 26.4°F (-3.1°C).

Humidity

In New Haven, the average relative humidity is 83%.

Rainfall

In New Haven, New York, during 11 rainfall days, 3.54" (90mm) of precipitation is typically accumulated. In New Haven, during the entire year, the rain falls for 171 days and collects up to 39.21" (996mm) of precipitation.

Snowfall

Months with snowfall in New Haven are January through May, October through December. In New Haven, in December, snow falls for 14.5 days, with typically accumulated 8.54" (217mm) of snow. Throughout the year, in New Haven, New York, there are 76.2 snowfall days, and 36.61" (930mm) of snow is accumulated.

Daylight

With an average of 9h of daylight, December has the shortest days of the year in New Haven, New York.

Sunshine

The average sunshine in December is 2.8h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index in New Haven. A UV Index of 2, and less, symbolizes a low threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in New Haven?

In New Haven, in December, the average high-temperature is 34.3°F (1.3°C), and the average low-temperature is 26.4°F (-3.1°C).

What is the average humidity in December in New Haven?

The average relative humidity in December in New Haven, New York, is 83%.

How many days does it rain in December in New Haven?

In New Haven, during December, the rain falls for 11 days and regularly aggregates up to 3.54" (90mm) of precipitation.

How much does it snow in New Haven in December?

In New Haven, New York, in December, during 14.5 snowfall days, 8.54" (217mm) of snow is typically accumulated.

What is the month with the shortest days in New Haven?

The month with the shortest days in New Haven is December, with an average of 9h of daylight.

How many hours of daylight does New Haven have in December?

In December, the average length of the day is 9h.

How long on average sun shines in December in New Haven?

In December, the average sunshine in New Haven is 2.8h.

What are the months with the lowest UV index in New Haven?

Months with the lowest UV index in New Haven are January and December, with an average maximum UV index of 1.

How high is the UV index in December in New Haven?

The average daily maximum UV index in December in New Haven is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in December - New Haven, NY
  • Average high temperature in December: 34.3°F

The warmest month (with the highest average high temperature) is July (75.2°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in December: 26.4°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average pressure in December - New Haven, NY
  • Average pressure in December: 30.05"

The month with the highest atmospheric pressure is November (30.08").
The month with the lowest atmospheric pressure is June (29.91").

Average wind speed in December - New Haven, NY
  • Average wind speed in December: 11.6mph

The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).

Average humidity in December - New Haven, NY
  • Average humidity in December: 83%

Months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is September (77%).

Average rainfall in December - New Haven, NY
  • Average rainfall in December: 3.54"

The wettest month (with the highest rainfall) is October (4.02").
The driest month (with the least rainfall) is September (2.36").

Average rainfall days in December - New Haven, NY
  • Average rainfall days in December: 11 days

The month with the highest number of rainy days is October (19.1 days).
The month with the least rainy days is February (7.8 days).

Average snowfall in December - New Haven, NY
  • Average snowfall in December: 8.54"

The month with the highest snowfall is January (8.98").
Months with the least snowfall are June, July, August and September (0").

Average snowfall days in December - New Haven, NY
  • Average snowfall days in December: 14.5 days

The month with the highest number of snowfall days is January (18.9 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - New Haven, NY
  • Average daylight in December: 9h

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in December: 2.8h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is January (Average sunshine: 2.4h).

Average sunshine days in December - New Haven, NY
  • Average sunshine days in December: 8 days

The month with the most sunshine days is September (14 days).
The month with the least sunshine days is January (6.3 days).

Average UV index in December - New Haven, NY
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January and December (UV index 1).

Average cloud cover in December - New Haven, NY
  • Average cloud cover in December: 73

The month with the most cloud cover is January (Cloud cover 77).
Months with the least cloud cover are July and August (Cloud cover 30).

Average visibility in December - New Haven, NY
  • Average visibility in December: 5mi

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