December weather forecast
Birdsboro, PA

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Weather in December

December, the first month of the winter in Birdsboro, is still a cold month, with an average temperature varying between 41.4°F (5.2°C) and 30°F (-1.1°C).

Temperature

The shift from November to December includes a small decrease in the average high-temperature, from a fresh 50.4°F (10.2°C) to a cold 41.4°F (5.2°C). During December, Birdsboro records an average temperature of 30°F (-1.1°C) at night.

Humidity

In Birdsboro, the average relative humidity in December is 80%.

Rainfall

In Birdsboro, in December, during 11.1 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. In Birdsboro, Pennsylvania, during the entire year, the rain falls for 162.2 days and collects up to 27.87" (708mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Birdsboro, during December, snow falls for 3.6 days and regularly aggregates up to 1.42" (36mm) of snow. Throughout the year, there are 22.9 snowfall days, and 10.35" (263mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:07 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:47 pm EST.

Sunshine

The average sunshine in December is 4.9h.

UV index

The months with the lowest UV index 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 low health risk from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 2 in December translates into these instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Updated: Jul 20, 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 41.4°F (5.2°C) and 30°F (-1.1°C) respectively. The average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is computed to be 86°F (30°C).

What is the average humidity in December?

In Birdsboro, Pennsylvania, the average relative humidity in December is 80%.

How much does it rain in Birdsboro in December?

In Birdsboro, in December, it is raining for 11.1 days, with typically 2.24" (57mm) of accumulated precipitation.

How much does it snow in December?

In Birdsboro, during December, snow falls for 3.6 days and regularly aggregates up to 1.42" (36mm) of snow.

What is the month with the shortest days?

With an average of 9h and 24min of daylight, December has the shortest days of the year.

How many hours of daylight does Birdsboro have in December?

In Birdsboro, the average day length in December is 9h and 22min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:47 pm EST.

How many hours of sunshine does Birdsboro have in December?

In Birdsboro, the average sunshine duration in December is 4.9h.

When is the lowest UV index?

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

What is the UV index reading in December?

In Birdsboro, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe 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
Birdsboro, PA

Average temperature in December - Birdsboro, PA
  • Average high temperature in December: 41.4°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in December: 30°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

Average pressure in December
Birdsboro, PA

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

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Birdsboro, PA

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

The windiest months (with the highest average wind speed) are January and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
Birdsboro, PA

Average humidity in December - Birdsboro, PA
  • Average humidity in December: 80%

The months with the highest relative humidity are February and October (81%).
The month with the lowest relative humidity is April (76%).

Average rainfall in December
Birdsboro, PA

Average rainfall in December - Birdsboro, PA
  • Average rainfall in December: 2.24"

The wettest month (with the highest rainfall) is August (2.83").
The driest month (with the least rainfall) is September (1.77").

Average rainfall days in December
Birdsboro, PA

Average rainfall days in December - Birdsboro, PA
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (9.4 days).

Average snowfall in December
Birdsboro, PA

Average snowfall in December - Birdsboro, PA
  • Average snowfall in December: 1.42"

The month with the highest snowfall is March (3.03").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Birdsboro, PA

Average snowfall days in December - Birdsboro, PA
  • Average snowfall days in December: 3.6 days

The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Birdsboro, 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: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in December
Birdsboro, PA

Average sunshine days in December - Birdsboro, PA
  • Average sunshine days in December: 15.9 days

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is May (11.6 days).

Average UV index in December
Birdsboro, PA

Average UV index in December - Birdsboro, PA
  • Average UV index in December: 2

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

Average cloud cover in December
Birdsboro, PA

Average cloud cover in December - Birdsboro, PA
  • Average cloud cover in December: 49

The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in December
Birdsboro, PA

Average visibility in December - Birdsboro, PA
  • Average visibility in December: 6mi

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

Birdsboro, Pennsylvania, USA

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