December weather forecast
Sprankle Mills, PA

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Weather in December

The first month of the winter, December, is also an icy month in Sprankle Mills, Pennsylvania, with an average temperature fluctuating between 36.7°F (2.6°C) and 25.7°F (-3.5°C).

Temperature

Start of December brings a shift in the average high-temperature, falling from November's chilly 46.2°F (7.9°C) to a wintry 36.7°F (2.6°C). In Sprankle Mills, December's nights observe an average temperature dip to a freezing cold 25.7°F (-3.5°C).

Humidity

The average relative humidity in December in Sprankle Mills is 86%.

Rainfall

In Sprankle Mills, Pennsylvania, in December, during 10.5 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. In Sprankle Mills, during the entire year, the rain falls for 151.9 days and collects up to 22.13" (562mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Sprankle Mills, in December, during 14.6 snowfall days, 4.21" (107mm) of snow is typically accumulated. Throughout the year, in Sprankle Mills, there are 71 snowfall days, and 22.32" (567mm) 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 the month, sunrise is at 7:22 am and sunset at 4:48 pm. On the last day of December, sunrise is at 7:41 am and sunset at 4:58 pm EST.

Sunshine

The average sunshine in December is 2.6h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.
Note: In December, the average maximum UV index of 1 translates into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.

Frequently asked questions

How cold is December?

An average high-temperature, in December, in Sprankle Mills, is 36.7°F (2.6°C) and the average low-temperature is 25.7°F (-3.5°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 86°F (30°C).

What is the average humidity in December?

In Sprankle Mills, the average relative humidity in December is 86%.

How much does it rain in December?

In Sprankle Mills, in December, during 10.5 rainfall days, 1.73" (44mm) of precipitation is typically accumulated.

How much does it snow in December?

In Sprankle Mills, in December, during 14.6 snowfall days, 4.21" (107mm) of snow is typically accumulated.

What is the month with the shortest days in Sprankle Mills?

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?

In December, the average day length is 9h and 17min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:22 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 4:58 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 2.6h.

When is the lowest UV index?

The month with the lowest UV index is December, with an average maximum UV index of 1.

What is the UV index reading in December?

In Sprankle Mills, the average daily maximum UV index in December is 1. A UV Index estimate 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
Sprankle Mills, PA

Average temperature in December - Sprankle Mills, PA
  • Average high temperature in December: 36.7°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).

  • Average low temperature in December: 25.7°F

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

Average pressure in December
Sprankle Mills, PA

Average pressure in December - Sprankle Mills, 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 (29.95"Hg).

Average wind speed in December
Sprankle Mills, PA

Average wind speed in December - Sprankle Mills, PA
  • Average wind speed in December: 8.6mph

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in December
Sprankle Mills, PA

Average humidity in December - Sprankle Mills, PA
  • Average humidity in December: 86%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are June, July and August (78%).

Average rainfall in December
Sprankle Mills, PA

Average rainfall in December - Sprankle Mills, PA
  • Average rainfall in December: 1.73"

The wettest month (with the highest rainfall) is April (2.48").
The driest month (with the least rainfall) is November (1.26").

Average rainfall days in December
Sprankle Mills, PA

Average rainfall days in December - Sprankle Mills, PA
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (7.8 days).

Average snowfall in December
Sprankle Mills, PA

Average snowfall in December - Sprankle Mills, PA
  • Average snowfall in December: 4.21"

The month with the highest snowfall is January (5.63").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Sprankle Mills, PA

Average snowfall days in December - Sprankle Mills, PA
  • Average snowfall days in December: 14.6 days

The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Sprankle Mills, PA

Average daylight in December / Average sunshine in December - Sprankle Mills, PA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 2h and 4min

The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).

Average sunshine days in December
Sprankle Mills, PA

Average sunshine days in December - Sprankle Mills, PA
  • Average sunshine days in December: 9.2 days

The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (7.8 days).

Average UV index in December
Sprankle Mills, PA

Average UV index in December - Sprankle Mills, PA
  • Average UV index in December: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
Sprankle Mills, PA

Average cloud cover in December - Sprankle Mills, PA
  • Average cloud cover in December: 72

The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 39).

Average visibility in December
Sprankle Mills, PA

Average visibility in December - Sprankle Mills, PA
  • Average visibility in December: 5mi

The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).

Sprankle Mills, Pennsylvania, USA

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