December weather forecast
Haverford, PA

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Weather in December

The first month of the winter, December, is also a frosty month in Haverford, Pennsylvania, with an average temperature varying between 32°F (0°C) and 43.2°F (6.2°C).

Temperature

December brings a minor shift in the average high-temperature, adjusting from a fresh 52°F (11.1°C) in November to a chilly 43.2°F (6.2°C). Throughout December, an average low-temperature of 32°F (0°C) is experienced in Haverford.

Humidity

The average relative humidity in December in Haverford is 77%.

Rainfall

In December, in Haverford, the rain falls for 6.5 days. Throughout December, 0.91" (23mm) of precipitation is accumulated. In Haverford, during the entire year, the rain falls for 111.8 days and collects up to 9.69" (246mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. In Haverford, in December, snow falls for 2.1 days, with typically accumulated 0.63" (16mm) of snow. In Haverford, during the entire year, snow falls for 15.1 days and aggregates up to 3.66" (93mm) of snow.

Daylight

The month with the shortest days in Haverford is December, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:04 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:46 pm EST.

Sunshine

In Haverford, the average sunshine in December is 4.9h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Haverford. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 2 during December translates into the following guidance:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Frequently asked questions

How cold is it in Haverford in December?

In December, the average high-temperature and low-temperature in Haverford, Pennsylvania, are 43.2°F (6.2°C) and 32°F (0°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is estimated at 89.6°F (32°C).

What is the average humidity in December in Haverford?

The average relative humidity in December is 77%.

How much does it rain in Haverford in December?

In December, in Haverford, the rain falls for 6.5 days. Throughout December, 0.91" (23mm) of precipitation is accumulated.

How many days does it snow in December in Haverford?

In Haverford, Pennsylvania, in December, during 2.1 snowfall days, 0.63" (16mm) of snow is typically accumulated.

What is the month with the shortest days in Haverford?

December has the shortest days of the year in Haverford, Pennsylvania, with an average of 9h and 24min of daylight.

How many hours of daylight does Haverford have in December?

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

What time are sunrise and sunset in December in Haverford?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:36 pm. On the last day of the month, in Haverford, sunrise is at 7:22 am and sunset at 4:46 pm EST.

How long on average sun shines in December in Haverford?

The average sunshine duration in December in Haverford, Pennsylvania, is 4.9h.

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

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Haverford.

How high is the UV index in December in Haverford?

In Haverford, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability 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
Haverford, PA

Average temperature in December - Haverford, PA
  • Average high temperature in December: 43.2°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in December: 32°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25°F).

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Average pressure in December
Haverford, PA

Average pressure in December - Haverford, 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).

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Average wind speed in December
Haverford, PA

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

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in December
Haverford, PA

Average humidity in December - Haverford, PA
  • Average humidity in December: 77%

The months with the highest relative humidity are February and October (78%).
The months with the lowest relative humidity are April, July and August (71%).

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Average rainfall in December
Haverford, PA

Average rainfall in December - Haverford, PA
  • Average rainfall in December: 0.91"

The wettest months (with the highest rainfall) are July and August (1.14").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days in December
Haverford, PA

Average rainfall days in December - Haverford, PA
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is January (5.3 days).

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Average snowfall in December
Haverford, PA

Average snowfall in December - Haverford, PA
  • Average snowfall in December: 0.63"

The months with the highest snowfall are February and March (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Haverford, PA

Average snowfall days in December - Haverford, PA
  • Average snowfall days in December: 2.1 days

The month with the highest number of snowfall days is January (4.5 days).
The 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
Haverford, PA

Average daylight in December / Average sunshine in December - Haverford, 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 36min).

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Average sunshine days in December
Haverford, PA

Average sunshine days in December - Haverford, PA
  • Average sunshine days in December: 22.2 days

The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is July (14.9 days).

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Average UV index in December
Haverford, PA

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

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

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Average cloud cover in December
Haverford, PA

Average cloud cover in December - Haverford, PA
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in December
Haverford, PA

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

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

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Haverford, Pennsylvania, USA

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