December weather forecast
Antrim, PA

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Weather in December

December, the first month of the winter in Antrim, is also a wintry month, with an average temperature fluctuating between 34.7°F (1.5°C) and 25.2°F (-3.8°C).

Temperature

Antrim's transition into December involves a shift in temperature, receding from a chilly 44.1°F (6.7°C) in November to an icy 34.7°F (1.5°C). Nighttime temperature dips to a mean of 25.2°F (-3.8°C) during December.

Humidity

The average relative humidity in December is 85%.

Rainfall

In Antrim, in December, it is raining for 11.9 days, with typically 1.5" (38mm) of accumulated precipitation. Throughout the year, there are 161.9 rainfall days, and 20.04" (509mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Antrim, Pennsylvania, during December, snow falls for 14.3 days and regularly aggregates up to 3.5" (89mm) of snow. Throughout the year, there are 71.4 snowfall days, and 16.54" (420mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 12min of daylight.
On the first day of the month, sunrise is at 7:17 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:35 am and sunset at 4:49 pm EST.

Sunshine

The month with the least sunshine is December, with an average of 3.1h of sunshine.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.
Note: A maximum UV index of 1 in December translates into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Updated: Jul 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

Antrim in December has an average high-temperature of 34.7°F (1.5°C) and an average low-temperature of 25.2°F (-3.8°C).

What is the average humidity in December?

In Antrim, the average relative humidity in December is 85%.

How many days does it rain in December?

In Antrim, in December, during 11.9 rainfall days, 1.5" (38mm) of precipitation is typically accumulated.

How much does it snow in December?

In Antrim, in December, during 14.3 snowfall days, 3.5" (89mm) of snow is typically accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 12min of daylight.

How many hours of daylight does Antrim have in December?

In December, the average day length is 9h and 13min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:17 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:49 pm EST.

What is the month with the least sunshine?

With an average of 3.1h of sunshine, December has the least sunshine of the year in Antrim.

How long on average sun shines in December?

In December, the average sunshine duration is 3.1h.

What is the month with the lowest UV index in Antrim?

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

What is the UV index reading in December?

In December, the average daily maximum UV index in Antrim is 1. A UV Index estimate of 2, and below, represents a low health risk 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
Antrim, PA

Average temperature in December - Antrim, PA
  • Average high temperature in December: 34.7°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in December: 25.2°F

The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

Average pressure in December
Antrim, PA

Average pressure in December - Antrim, PA
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Antrim, PA

Average wind speed in December - Antrim, PA
  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in December
Antrim, PA

Average humidity in December - Antrim, PA
  • Average humidity in December: 85%

The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are June and July (78%).

Average rainfall in December
Antrim, PA

Average rainfall in December - Antrim, PA
  • Average rainfall in December: 1.5"

The wettest month (with the highest rainfall) is April (2.24").
The driest month (with the least rainfall) is January (1.22").

Average rainfall days in December
Antrim, PA

Average rainfall days in December - Antrim, PA
  • Average rainfall days in December: 11.9 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.6 days).

Average snowfall in December
Antrim, PA

Average snowfall in December - Antrim, PA
  • Average snowfall in December: 3.5"

The month with the highest snowfall is February (4.57").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Antrim, PA

Average snowfall days in December - Antrim, PA
  • Average snowfall days in December: 14.3 days

The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Antrim, PA
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 3h and 1min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).

Average sunshine days in December
Antrim, PA

Average sunshine days in December - Antrim, PA
  • Average sunshine days in December: 9.2 days

The month with the most sunshine days is September (14.9 days).
The month with the least sunshine days is February (8.4 days).

Average UV index in December
Antrim, PA

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

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

Average cloud cover in December
Antrim, PA

Average cloud cover in December - Antrim, PA
  • Average cloud cover in December: 68

The months with the most cloud cover are January and December (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 40).

Average visibility in December
Antrim, PA

Average visibility in December - Antrim, PA
  • Average visibility in December: 5mi

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

Antrim, Pennsylvania, USA

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