December weather forecast
Franklin, PA

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Weather in December

The first month of the winter, December, is still a cold month in Franklin, Pennsylvania, with an average temperature ranging between min 25.7°F (-3.5°C) and max 36.1°F (2.3°C).

Temperature

With the onset of December, Franklin experiences a modest temperature adjustment, with the average high-temperature receding from a chilly 45.7°F (7.6°C) in November to an icy 36.1°F (2.3°C). An average low-temperature of 25.7°F (-3.5°C) is recorded in the month of December in Franklin.

Humidity

The average relative humidity in December in Franklin is 87%.

Rainfall

In Franklin, in December, it is raining for 12.3 days, with typically 2.99" (76mm) of accumulated precipitation. In Franklin, during the entire year, the rain falls for 186 days and collects up to 38.03" (966mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Franklin, Pennsylvania, in December, during 17.5 snowfall days, 7.99" (203mm) of snow is typically accumulated. Throughout the year, in Franklin, there are 87.8 snowfall days, and 42.95" (1091mm) of snow is accumulated.

Daylight

The month with the shortest days in Franklin, Pennsylvania, is December, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:26 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 4:59 pm EST.

Sunshine

The average sunshine in December is 2.6h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index in Franklin. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In December, the average maximum UV index of 1 translates into the following recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
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Frequently asked questions

How cold is December in Franklin?

In Franklin, in December, the average high-temperature is 36.1°F (2.3°C), and the average low-temperature is 25.7°F (-3.5°C).

What is the average humidity in December in Franklin?

In December, the average relative humidity in Franklin is 87%.

How much does it rain in Franklin in December?

In Franklin, in December, during 12.3 rainfall days, 2.99" (76mm) of precipitation is typically accumulated.

How much does it snow in Franklin in December?

In Franklin, Pennsylvania, during December, snow falls for 17.5 days and regularly aggregates up to 7.99" (203mm) of snow.

What is the month with the shortest days in Franklin?

December has the shortest days of the year in Franklin, Pennsylvania, with an average of 9h and 12min of daylight.

What is the average length of the day in December in Franklin?

The average day length in December is 9h and 14min.

What time are sunrise and sunset in December in Franklin?

On the first day of December in Franklin, sunrise is at 7:26 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 4:59 pm EST.

How long on average sun shines in December in Franklin?

In Franklin, the average sunshine duration in December is 2.6h.

When is the lowest UV index in Franklin?

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

How high is the UV index in December in Franklin?

In December, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes 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
Franklin, PA

Average temperature in December - Franklin, PA
  • Average high temperature in December: 36.1°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (30°F).

  • Average low temperature in December: 25.7°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).

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Average pressure in December
Franklin, PA

Average pressure in December - Franklin, 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
Franklin, PA

Average wind speed in December - Franklin, PA
  • Average wind speed in December: 7.7mph

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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Average humidity in December
Franklin, PA

Average humidity in December - Franklin, PA
  • Average humidity in December: 87%

The months with the highest relative humidity are January and February (89%).
The months with the lowest relative humidity are May, June and July (79%).

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Average rainfall in December
Franklin, PA

Average rainfall in December - Franklin, PA
  • Average rainfall in December: 2.99"

The wettest month (with the highest rainfall) is April (4.09").
The driest month (with the least rainfall) is November (2.44").

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Average rainfall days in December
Franklin, PA

Average rainfall days in December - Franklin, PA
  • Average rainfall days in December: 12.3 days

The month with the highest number of rainy days is May (20.7 days).
The month with the least rainy days is January (8.1 days).

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Average snowfall in December
Franklin, PA

Average snowfall in December - Franklin, PA
  • Average snowfall in December: 7.99"

The month with the highest snowfall is January (11.65").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Franklin, PA

Average snowfall days in December - Franklin, PA
  • Average snowfall days in December: 17.5 days

The month with the highest number of snowfall days is January (21.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Franklin, PA
  • Average daylight in December: 9h and 1min

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 12min).

  • Average sunshine in December: 2h and 4min

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).

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Average sunshine days in December
Franklin, PA

Average sunshine days in December - Franklin, PA
  • Average sunshine days in December: 7.5 days

The month with the most sunshine days is November (11.3 days).
The month with the least sunshine days is February (5 days).

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Average UV index in December
Franklin, PA

Average UV index in December - Franklin, 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).

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Average cloud cover in December
Franklin, PA

Average cloud cover in December - Franklin, PA
  • Average cloud cover in December: 73

The month with the most cloud cover is January (Cloud cover 77).
The months with the least cloud cover are July and August (Cloud cover 39).

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Average visibility in December
Franklin, PA

Average visibility in December - Franklin, PA
  • Average visibility in December: 4mi

The months with the highest visibility are March, April, May, June, July, August, October and November (5mi).
The months with the lowest visibility are January, February, September and December (4mi).

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Franklin, Pennsylvania, USA

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