December weather forecast
Lucullus, PA

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Weather in December

The first month of the winter, December, is also a wintry month in Lucullus, Pennsylvania, with an average temperature fluctuating between 25°F (-3.9°C) and 35.2°F (1.8°C).

Temperature

The onset of December coincides with a reduction in the average high-temperature, falling from a chilly 44.6°F (7°C) in November to an icy 35.2°F (1.8°C). An average nighttime temperature of 25°F (-3.9°C) is observed during December.

Humidity

The average relative humidity in December in Lucullus is 85%.

Rainfall

In Lucullus, during December, the rain falls for 11.3 days and regularly aggregates up to 2.8" (71mm) of precipitation. Throughout the year, there are 168.8 rainfall days, and 32.56" (827mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Lucullus. In Lucullus, during December, snow falls for 14.4 days and regularly aggregates up to 6.3" (160mm) of snow. Throughout the year, there are 71.6 snowfall days, and 35.47" (901mm) of snow is accumulated.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year in Lucullus.
On the first day of December, sunrise is at 7:17 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:50 pm EST.

Sunshine

January and December, with an average of 3h of sunshine, are months with the least sunshine in Lucullus.

UV index

The months with the lowest UV index in Lucullus, Pennsylvania, are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.
Note: In December, the maximum UV index of 1 suggests these recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in Lucullus?

The average high-temperature, in December, in Lucullus, is 35.2°F (1.8°C), while the average low-temperature is 25°F (-3.9°C).

What is the average humidity in December in Lucullus?

In December, the average relative humidity in Lucullus is 85%.

How much does it rain in Lucullus in December?

In Lucullus, in December, during 11.3 rainfall days, 2.8" (71mm) of precipitation is typically accumulated.

How much does it snow in Lucullus in December?

In Lucullus, Pennsylvania, in December, snow falls for 14.4 days, with typically accumulated 6.3" (160mm) of snow.

What is the month with the shortest days in Lucullus?

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

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

In Lucullus, the average day length in December is 9h and 15min.

When is the sunrise / sunset in December in Lucullus?

On the first day of December, sunrise is at 7:17 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:50 pm EST.

What are the months with the least sunshine in Lucullus?

January and December, with an average of 3h of sunshine, are months with the least sunshine.

How long on average sun shines in December in Lucullus?

The average sunshine duration in December in Lucullus is 3h.

When is the lowest UV index in Lucullus?

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Lucullus, Pennsylvania.

What is the UV index intensity in December in Lucullus?

In Lucullus, Pennsylvania, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a minimal hazard to health 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
Lucullus, PA

Average temperature in December - Lucullus, PA
  • Average high temperature in December: 35.2°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 (29.3°F).

  • Average low temperature in December: 25°F

The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

Average pressure in December
Lucullus, PA

Average pressure in December - Lucullus, 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
Lucullus, PA

Average wind speed in December - Lucullus, PA
  • Average wind speed in December: 7.4mph

The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in December
Lucullus, PA

Average humidity in December - Lucullus, PA
  • Average humidity in December: 85%

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is July (77%).

Average rainfall in December
Lucullus, PA

Average rainfall in December - Lucullus, PA
  • Average rainfall in December: 2.8"

The wettest month (with the highest rainfall) is April (3.7").
The driest month (with the least rainfall) is November (2.13").

Average rainfall days in December
Lucullus, PA

Average rainfall days in December - Lucullus, PA
  • Average rainfall days in December: 11.3 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (8.4 days).

Average snowfall in December
Lucullus, PA

Average snowfall in December - Lucullus, PA
  • Average snowfall in December: 6.3"

The month with the highest snowfall is February (9.84").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Lucullus, PA

Average snowfall days in December - Lucullus, PA
  • Average snowfall days in December: 14.4 days

The month with the highest number of snowfall days is January (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Lucullus, 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: 3h and 0min

The month with the most sunshine is July (Average sunshine: 9h and 30min).
The months with the least sunshine are January and December (Average sunshine: 3h and 0min).

Average sunshine days in December
Lucullus, PA

Average sunshine days in December - Lucullus, PA
  • Average sunshine days in December: 10 days

The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (7.9 days).

Average UV index in December
Lucullus, PA

Average UV index in December - Lucullus, PA
  • Average UV index in December: 1

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

Average cloud cover in December
Lucullus, PA

Average cloud cover in December - Lucullus, PA
  • Average cloud cover in December: 69

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 41).

Average visibility in December
Lucullus, PA

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

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

Lucullus, Pennsylvania, USA

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