December weather forecast
Haafsville, PA

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Weather in December

December, the first month of the winter in Haafsville, is also an icy month, with an average temperature fluctuating between 28.9°F (-1.7°C) and 40.3°F (4.6°C).

Temperature

The arrival of December corresponds with a reduction in the average high-temperature, down from November's cool 50°F (10°C) to a wintry 40.3°F (4.6°C). Throughout December, Haafsville records an average temperature of 28.9°F (-1.7°C) at night.

Humidity

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

Rainfall

In Haafsville, Pennsylvania, in December, during 11.2 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. In Haafsville, during the entire year, the rain falls for 155.8 days and collects up to 30.75" (781mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Haafsville, in December, during 5 snowfall days, 2.36" (60mm) of snow is typically accumulated. In Haafsville, during the entire year, snow falls for 29.4 days and aggregates up to 15.87" (403mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:07 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:45 pm EST.

Sunshine

In December, the average sunshine in Haafsville is 4.7h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: In December, the maximum UV index of 2 transforms into these recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. To cut down UV radiation exposure by about half, sport a wide-brim hat. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

In December, in Haafsville, the average high-temperature is 40.3°F (4.6°C), and the average low-temperature is 28.9°F (-1.7°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is estimated at 86°F (30°C).

What is the average humidity in December?

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

How many days does it rain in December?

In Haafsville, in December, it is raining for 11.2 days, with typically 2.68" (68mm) of accumulated precipitation.

How much does it snow in December?

In Haafsville, Pennsylvania, in December, snow falls for 5 days, with typically accumulated 2.36" (60mm) of snow.

What is the month with the shortest days?

With an average of 9h and 18min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

The average day length in December is 9h and 20min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:45 pm EST.

How many hours of sunshine does Haafsville have in December?

In December, the average sunshine duration is 4.7h.

What are the months with 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?

The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health threat 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
Haafsville, PA

Average temperature in December - Haafsville, PA
  • Average high temperature in December: 40.3°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in December: 28.9°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in December
Haafsville, PA

Average pressure in December - Haafsville, 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
Haafsville, PA

Average wind speed in December - Haafsville, PA
  • Average wind speed in December: 7.6mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

Average humidity in December
Haafsville, PA

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

The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).

Average rainfall in December
Haafsville, PA

Average rainfall in December - Haafsville, PA
  • Average rainfall in December: 2.68"

The wettest month (with the highest rainfall) is April (2.99").
The driest month (with the least rainfall) is September (1.77").

Average rainfall days in December
Haafsville, PA

Average rainfall days in December - Haafsville, PA
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (8.5 days).

Average snowfall in December
Haafsville, PA

Average snowfall in December - Haafsville, PA
  • Average snowfall in December: 2.36"

The month with the highest snowfall is March (4.29").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Haafsville, PA

Average snowfall days in December - Haafsville, PA
  • Average snowfall days in December: 5 days

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Haafsville, 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 18min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

Average sunshine days in December
Haafsville, PA

Average sunshine days in December - Haafsville, PA
  • Average sunshine days in December: 16.6 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is April (11.2 days).

Average UV index in December
Haafsville, PA

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

The months with the highest UV index are 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
Haafsville, PA

Average cloud cover in December - Haafsville, PA
  • Average cloud cover in December: 51

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in December
Haafsville, PA

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

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

Haafsville, Pennsylvania, USA

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