December weather forecast
Rome, PA

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Weather in December

The first month of the winter, December, is still a cold month in Rome, Pennsylvania, with an average temperature ranging between min 25.5°F (-3.6°C) and max 35.2°F (1.8°C).

Temperature

The onset of December coincides with a reduction in the average high-temperature, falling from a frosty 45.3°F (7.4°C) in November to a cold 35.2°F (1.8°C). Rome's average low-temperature in the month of December is recorded at a subzero cold 25.5°F (-3.6°C).

Humidity

In December, the average relative humidity is 84%.

Rainfall

In December, the rain falls for 11.5 days. Throughout December, 1.61" (41mm) of precipitation is accumulated. In Rome, during the entire year, the rain falls for 164.7 days and collects up to 24.09" (612mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Rome. In Rome, in December, during 12.7 snowfall days, 3.54" (90mm) of snow is typically accumulated. Throughout the year, there are 67.5 snowfall days, and 20.75" (527mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 12min of daylight.
On the first day of the month, sunrise is at 7:14 am and sunset at 4:35 pm. On the last day of December, in Rome, Pennsylvania, sunrise is at 7:32 am and sunset at 4:44 pm EST.

Sunshine

The months with the least sunshine are January, February and December, with an average of 3.2h of sunshine.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 1 during December translates into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

The high-temperature, in December, in Rome, records 35.2°F (1.8°C), while the low-temperature is 25.5°F (-3.6°C).

What is the average humidity in December?

The average relative humidity in December is 84%.

How many days does it rain in December?

In Rome, in December, during 11.5 rainfall days, 1.61" (41mm) of precipitation is typically accumulated.

How much does it snow in December?

In Rome, in December, snow falls for 12.7 days, with typically accumulated 3.54" (90mm) of snow.

What is the month with the shortest days?

With an average of 9h and 12min 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 11min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:14 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:44 pm EST.

What are the months with the least sunshine?

January, February and December, with an average of 3.2h of sunshine, are months with the least sunshine.

How long on average sun shines in December?

In December, the average sunshine duration is 3.2h.

What is the month with the lowest UV index?

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

What is the UV index reading in December?

In December, the average daily maximum UV index is 1. A UV Index reading 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
Rome, PA

Average temperature in December - Rome, 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: 25.5°F

The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).

Average pressure in December
Rome, PA

Average pressure in December - Rome, PA
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Rome, PA

Average wind speed in December - Rome, PA
  • Average wind speed in December: 8.3mph

The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in December
Rome, PA

Average humidity in December - Rome, PA
  • Average humidity in December: 84%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, June and July (78%).

Average rainfall in December
Rome, PA

Average rainfall in December - Rome, PA
  • Average rainfall in December: 1.61"

The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is January (1.38").

Average rainfall days in December
Rome, PA

Average rainfall days in December - Rome, PA
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in December
Rome, PA

Average snowfall in December - Rome, PA
  • Average snowfall in December: 3.54"

The month with the highest snowfall is February (5.51").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Rome, PA

Average snowfall days in December - Rome, PA
  • Average snowfall days in December: 12.7 days

The month with the highest number of snowfall days is January (15.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 3h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 12min).

Average sunshine days in December
Rome, PA

Average sunshine days in December - Rome, PA
  • Average sunshine days in December: 9.4 days

The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is February (8.8 days).

Average UV index in December
Rome, PA

Average UV index in December - Rome, 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
Rome, PA

Average cloud cover in December - Rome, PA
  • Average cloud cover in December: 68

The months with the most cloud cover are January, February and December (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 39).

Average visibility in December
Rome, PA

Average visibility in December - Rome, PA
  • Average visibility in December: 5mi

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

Rome, Pennsylvania, USA

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