December weather forecast
Gallows Hill, PA

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Weather in December

The first month of the winter, December, is still a cold month in Gallows Hill, Pennsylvania, with temperature in the range of an average high of 41.5°F (5.3°C) and an average low of 29.8°F (-1.2°C).

Temperature

December signifies a gentle decline in Gallows Hill's average high-temperature, easing from a cool 50.4°F (10.2°C) in November to a cold 41.5°F (5.3°C). In Gallows Hill, the nighttime temperature averages to a subzero cold 29.8°F (-1.2°C) during December.

Humidity

In December, the average relative humidity is 80%.

Rainfall

In Gallows Hill, in December, during 10 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. Throughout the year, there are 154.1 rainfall days, and 31.73" (806mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In December, it is snowing for 5 days. Throughout December, 2.87" (73mm) of snow is accumulated. Throughout the year, there are 29.3 snowfall days, and 16.57" (421mm) of snow is accumulated.

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 7:05 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:44 pm EST.

Sunshine

In December, the average sunshine 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 value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Stay sun-safe with clothing that is both closely woven and worn loosely. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.

Frequently asked questions

How cold is it in December?

In December, in Gallows Hill, the average high-temperature is 41.5°F (5.3°C), and the average low-temperature is 29.8°F (-1.2°C). In August, 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, is computed to be 89.6°F (32°C).

What is the average humidity in December?

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

How many days does it rain in December?

In Gallows Hill, during December, the rain falls for 10 days and regularly aggregates up to 2.91" (74mm) of precipitation.

How many days does it snow in December?

In Gallows Hill, Pennsylvania, in December, during 5 snowfall days, 2.87" (73mm) 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 18min of daylight.

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 7:05 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:44 pm EST.

How many hours of sunshine does Gallows Hill have in December?

In Gallows Hill, the average sunshine duration in December is 4.8h.

What is the month with the lowest UV index?

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

What is the UV index intensity in December?

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
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
Gallows Hill, PA

Average temperature in December - Gallows Hill, PA
  • Average high temperature in December: 41.5°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in December: 29.8°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

Average pressure in December
Gallows Hill, PA

Average pressure in December - Gallows Hill, 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
Gallows Hill, PA

Average wind speed in December - Gallows Hill, PA
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in December
Gallows Hill, PA

Average humidity in December - Gallows Hill, PA
  • Average humidity in December: 80%

The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (75%).

Average rainfall in December
Gallows Hill, PA

Average rainfall in December - Gallows Hill, PA
  • Average rainfall in December: 2.91"

The wettest months (with the highest rainfall) are May and July (3.07").
The driest month (with the least rainfall) is September (1.89").

Average rainfall days in December
Gallows Hill, PA

Average rainfall days in December - Gallows Hill, PA
  • Average rainfall days in December: 10 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
Gallows Hill, PA

Average snowfall in December - Gallows Hill, PA
  • Average snowfall in December: 2.87"

The month with the highest snowfall is March (4.72").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Gallows Hill, PA

Average snowfall days in December - Gallows Hill, PA
  • Average snowfall days in December: 5 days

The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Gallows Hill, PA

Average daylight in December / Average sunshine in December - Gallows Hill, 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in December
Gallows Hill, PA

Average sunshine days in December - Gallows Hill, PA
  • Average sunshine days in December: 17 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (11.8 days).

Average UV index in December
Gallows Hill, PA

Average UV index in December - Gallows Hill, 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
Gallows Hill, PA

Average cloud cover in December - Gallows Hill, PA
  • Average cloud cover in December: 50

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in December
Gallows Hill, PA

Average visibility in December - Gallows Hill, PA
  • Average visibility in December: 5mi

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

Gallows Hill, Pennsylvania, USA

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