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 average temperature ranging between min 26.4°F (-3.1°C) and max 34.3°F (1.3°C).

Temperature

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

Humidity

The average relative humidity in December is 83%.

Rainfall

In December, the rain falls for 11 days. Throughout December, 3.54" (90mm) of precipitation is 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 December, it is snowing for 14.5 days. Throughout December, 8.54" (217mm) of snow is accumulated. In New Haven, during the entire year, snow falls for 76.2 days, and aggregates up to 36.61" (930mm) of snow.

Daylight

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

Sunshine

In December, the average sunshine 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 estimate of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 1 interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for 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.

What is the temperature in December in New Haven?

The average high-temperature, in December, is 34.3°F (1.3°C), while the average low-temperature is 26.4°F (-3.1°C).

What is the average humidity in December in New Haven?

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

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

In New Haven, in December, during 11 rainfall days, 3.54" (90mm) of precipitation is typically accumulated.

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?

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

What is the average length of the day in December in New Haven?

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

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

The average sunshine in December in New Haven, New York, is 2.8h.

What is the month with the lowest UV index in New Haven?

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

What is the UV index reading in December in New Haven?

The average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health from the exposure to the Sun's UV radiation.
Average temperature in December - New Haven, NY
  • Average high temperature in December: 1.3°C

The warmest month (with the highest average high temperature) is July (24°C).
The month with the lowest average high temperature is January (-2.3°C).

  • Average low temperature in December: -3.1°C

The month with the highest average low temperature is July (16.8°C).
The coldest month (with the lowest average low temperature) is January (-7.8°C).

Average pressure in December - New Haven, NY
  • Average pressure in December: 1017.7mbar

The month with the highest atmospheric pressure is November (1018.7mbar).
The month with the lowest atmospheric pressure is June (1013mbar).

Average wind speed in December - New Haven, NY
  • Average wind speed in December: 18.6km/h

The windiest month (with the highest average wind speed) is January (19.2km/h).
The calmest month (with the lowest average wind speed) is July (11km/h).

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: 90mm

The wettest month (with the highest rainfall) is October (102mm).
The driest month (with the least rainfall) is September (60mm).

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: 217mm

The month with the highest snowfall is January (228mm).
Months with the least snowfall are June, July, August and September (0mm).

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: 8km

Months with the highest visibility are April, May, June, July, August, September, October and November (9km).
Months with the lowest visibility are January, February, March and December (8km).