December weather forecast
Flying Hills, PA

Share

Weather in December

The first month of the winter, December, is still a cold month in Flying Hills, Pennsylvania, with an average temperature ranging between min 30°F (-1.1°C) and max 41.4°F (5.2°C).

Temperature

December brings a minor shift in the average high-temperature, adjusting from a cool 50.2°F (10.1°C) in November to a wintry 41.4°F (5.2°C). In Flying Hills, an average nighttime temperature of 30°F (-1.1°C) is expected during December.

Humidity

In December, the average relative humidity is 80%.

Rainfall

In December, the rain falls for 8.4 days. Throughout December, 0.91" (23mm) of precipitation is accumulated. Throughout the year, there are 129 rainfall days, and 13.5" (343mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. In Flying Hills, in December, during 3.2 snowfall days, 0.39" (10mm) of snow is typically accumulated. In Flying Hills, during the entire year, snow falls for 19.4 days and aggregates up to 4.45" (113mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:07 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:47 pm EST.

Sunshine

In Flying Hills, the average sunshine in December is 4.8h.

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 of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.

Frequently asked questions

How cold is 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. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 86°F (30°C).

What is the average humidity in December?

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

How much does it rain in December?

In Flying Hills, in December, it is raining for 8.4 days, with typically 0.91" (23mm) of accumulated precipitation.

How many days does it snow in December in Flying Hills?

In Flying Hills, in December, during 3.2 snowfall days, 0.39" (10mm) of snow is typically accumulated.

What is the month with the shortest days in Flying Hills?

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

What is the average length of the day in December?

In Flying Hills, 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 4:38 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:47 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 4.8h.

What is the month 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 intensity in December?

The average daily maximum UV index in December is 2. 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
Flying Hills, PA

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

The warmest month (with the highest average high temperature) is July (83.5°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°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure in December
Flying Hills, PA

Average pressure in December - Flying Hills, PA
  • Average pressure in December: 30.1"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
Flying Hills, PA

Average wind speed in December - Flying Hills, 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
Flying Hills, PA

Average humidity in December - Flying Hills, 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
Flying Hills, PA

Average rainfall in December - Flying Hills, PA
  • Average rainfall in December: 0.91"

The wettest month (with the highest rainfall) is August (1.69").
The driest month (with the least rainfall) is February (0.79").

Average rainfall days in December
Flying Hills, PA

Average rainfall days in December - Flying Hills, PA
  • Average rainfall days in December: 8.4 days

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (7.1 days).

Average snowfall in December
Flying Hills, PA

Average snowfall in December - Flying Hills, PA
  • Average snowfall in December: 0.39"

The month with the highest snowfall is February (1.54").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Flying Hills, PA

Average snowfall days in December - Flying Hills, PA
  • Average snowfall days in December: 3.2 days

The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Flying Hills, PA

Average daylight in December / Average sunshine in December - Flying Hills, 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
Flying Hills, PA

Average sunshine days in December - Flying Hills, PA
  • Average sunshine days in December: 19.3 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is May (12.3 days).

Average UV index in December
Flying Hills, PA

Average UV index in December - Flying Hills, 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
Flying Hills, PA

Average cloud cover in December - Flying Hills, 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 31).

Average visibility in December
Flying Hills, PA

Average visibility in December - Flying Hills, PA
  • Average visibility in December: 6mi

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

Flying Hills, Pennsylvania, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location