December weather forecast and climate
New Rochelle, NY

Weather in December

The first month of the winter, December, is still a cold month in New Rochelle, New York, with temperature in the range of an average low of 32.9°F (0.5°C) and an average high of 41.9°F (5.5°C).

Temperature

In New Rochelle, the average high-temperature decreases, from a fresh 50.9°F (10.5°C) in November, to a cold 41.9°F (5.5°C). The average low-temperature, in New Rochelle, New York, is 32.9°F (0.5°C).

Humidity

February and December, with an average relative humidity of 75%, are most humid months in New Rochelle, New York.

Rainfall

In New Rochelle, in December, it is raining for 11.6 days, with typically 2.95" (75mm) of accumulated precipitation. Throughout the year, there are 150.3 rainfall days, and 27.72" (704mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In December, in New Rochelle, it is snowing for 2.5 days. Throughout December, 1.5" (38mm) of snow is accumulated. In New Rochelle, during the entire year, snow falls for 18.1 days, and aggregates up to 8.46" (215mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9.3h of daylight.

Sunshine

The average sunshine in New Rochelle is 4.9h.

UV index

Months with the lowest UV index in New Rochelle are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 2 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. 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.
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FAQ

What are the most humid months in New Rochelle?

Months with the highest humidity in New Rochelle, New York, are February and December, with an average relative humidity of 75%.

What is the average humidity in December in New Rochelle?

In December, the average relative humidity in New Rochelle, New York, is 75%.

How much does it rain in New Rochelle in December?

In December, in New Rochelle, New York, the rain falls for 11.6 days. Throughout December, 2.95" (75mm) of precipitation is accumulated.

How many days does it snow in December in New Rochelle?

In New Rochelle, New York, during December, snow falls for 2.5 days and regularly aggregates up to 1.5" (38mm) of snow.

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

The month with the shortest days in New Rochelle is December, with an average of 9.3h of daylight.

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

In New Rochelle, the average length of the day in December is 9.3h.

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

In New Rochelle, New York, the average sunshine in December is 4.9h.

When is the lowest UV index in New Rochelle?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in New Rochelle, New York.

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

The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to the UV radiation.

Average temperature in December
New Rochelle, NY

Average temperature in December - New Rochelle, NY
  • Average high temperature in December: 41.9°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (36.3°F).

  • Average low temperature in December: 32.9°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).

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Average pressure in December
New Rochelle, NY

Average pressure in December - New Rochelle, NY
  • Average pressure in December: 30.07"

The month with the highest atmospheric pressure is November (30.1").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in December
New Rochelle, NY

Average wind speed in December - New Rochelle, NY
  • Average wind speed in December: 9.4mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

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Average humidity in December
New Rochelle, NY

Average humidity in December - New Rochelle, NY
  • Average humidity in December: 75%

Months with the highest relative humidity are February and December (75%).
The month with the lowest relative humidity is August (70%).

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Average rainfall in December
New Rochelle, NY

Average rainfall in December - New Rochelle, NY
  • Average rainfall in December: 2.95"

The wettest month (with the highest rainfall) is July (3.23").
The driest months (with the least rainfall) are January and February (1.69").

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Average rainfall days in December
New Rochelle, NY

Average rainfall days in December - New Rochelle, NY
  • Average rainfall days in December: 11.6 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (7.3 days).

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Average snowfall in December
New Rochelle, NY

Average snowfall in December - New Rochelle, NY
  • Average snowfall in December: 1.5"

The month with the highest snowfall is March (2.8").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
New Rochelle, NY

Average snowfall days in December - New Rochelle, NY
  • Average snowfall days in December: 2.5 days

Months with the highest number of snowfall days are January and February (5.3 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
New Rochelle, NY

Average daylight in December / Average sunshine in December - New Rochelle, NY
  • Average daylight in December: 9.3h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 4.9h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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Average sunshine days in December
New Rochelle, NY

Average sunshine days in December - New Rochelle, NY
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is July (12 days).

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Average UV index in December
New Rochelle, NY

Average UV index in December - New Rochelle, NY
  • Average UV index in December: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in December
New Rochelle, NY

Average cloud cover in December - New Rochelle, NY
  • Average cloud cover in December: 47

Months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in December
New Rochelle, NY

Average visibility in December - New Rochelle, NY
  • Average visibility in December: 6mi

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

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