December weather forecast
Lambertsville, PA

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Weather in December

December, the first month of the winter in Lambertsville, is still a cold month, with an average temperature varying between 36.5°F (2.5°C) and 25.7°F (-3.5°C).

Temperature

In Lambertsville, the average high-temperature in December decreases from a chilly 46°F (7.8°C) in November to a wintry 36.5°F (2.5°C). Lambertsville's temperature tends to fall to an average low of 25.7°F (-3.5°C) during the nights of December.

Humidity

The average relative humidity in December is 86%.

Rainfall

In Lambertsville, in December, it is raining for 10.4 days, with typically 3.11" (79mm) of accumulated precipitation. In Lambertsville, during the entire year, the rain falls for 162.4 days and collects up to 32.24" (819mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In December, it is snowing for 12.8 days. Throughout December, 5.2" (132mm) of snow is accumulated. In Lambertsville, during the entire year, snow falls for 66 days and aggregates up to 32.36" (822mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:19 am and sunset at 4:50 pm. On the last day of December, sunrise is at 7:37 am and sunset at 5:00 pm EST.

Sunshine

In December, the average sunshine is 3.1h.

UV index

The month with the lowest UV index in Lambertsville is December, with an average maximum UV index of 1. 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 maximum high daily UV index of 1 during December translates into the following directions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The Sun's radiation is especially intense around midday; try to stay in shade during this period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

In December, the average high-temperature and low-temperature are 36.5°F (2.5°C) and 25.7°F (-3.5°C) respectively.

What is the average humidity in December?

The average relative humidity in December is 86%.

How much does it rain in December?

In December, the rain falls for 10.4 days. Throughout December, 3.11" (79mm) of precipitation is accumulated.

How many days does it snow in December?

In Lambertsville, in December, snow falls for 12.8 days, with typically accumulated 5.2" (132mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

How many hours of daylight does Lambertsville have in December?

The average day length in December in Lambertsville is 9h and 23min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:19 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:00 pm EST.

How many hours of sunshine does Lambertsville have in December?

The average sunshine duration in December is 3.1h.

What is the month with the lowest UV index?

The month with the lowest UV index is December, with an average maximum UV index of 1.

How high is the UV index in December?

In Lambertsville, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
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
Lambertsville, PA

Average temperature in December - Lambertsville, PA
  • Average high temperature in December: 36.5°F

The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in December: 25.7°F

The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).

Average pressure in December
Lambertsville, PA

Average pressure in December - Lambertsville, PA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in December
Lambertsville, PA

Average wind speed in December - Lambertsville, PA
  • Average wind speed in December: 9.9mph

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in December
Lambertsville, PA

Average humidity in December - Lambertsville, PA
  • Average humidity in December: 86%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April, June and July (80%).

Average rainfall in December
Lambertsville, PA

Average rainfall in December - Lambertsville, PA
  • Average rainfall in December: 3.11"

The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is November (1.77").

Average rainfall days in December
Lambertsville, PA

Average rainfall days in December - Lambertsville, PA
  • Average rainfall days in December: 10.4 days

The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is November (8.2 days).

Average snowfall in December
Lambertsville, PA

Average snowfall in December - Lambertsville, PA
  • Average snowfall in December: 5.2"

The month with the highest snowfall is January (8.23").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Lambertsville, PA

Average snowfall days in December - Lambertsville, PA
  • Average snowfall days in December: 12.8 days

The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Lambertsville, PA

Average daylight in December / Average sunshine in December - Lambertsville, PA
  • 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 24min).

  • Average sunshine in December: 3h and 1min

The month with the most sunshine is July (Average sunshine: 9h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).

Average sunshine days in December
Lambertsville, PA

Average sunshine days in December - Lambertsville, PA
  • Average sunshine days in December: 9.6 days

The month with the most sunshine days is November (15.7 days).
The month with the least sunshine days is January (6.3 days).

Average UV index in December
Lambertsville, PA

Average UV index in December - Lambertsville, PA
  • Average UV index in December: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
Lambertsville, PA

Average cloud cover in December - Lambertsville, PA
  • Average cloud cover in December: 70

The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 42).

Average visibility in December
Lambertsville, PA

Average visibility in December - Lambertsville, PA
  • Average visibility in December: 4mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).

Lambertsville, Pennsylvania, USA

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