Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
During Rockwood's transition into December, the average high-temperature lessens, moving from a chilly 46.2°F (7.9°C) in November to a wintry 36.7°F (2.6°C). The month of December records an average low-temperature of 25.7°F (-3.5°C).Humidity
In Rockwood, the average relative humidity in December is 86%.Rainfall
In December, the rain falls for 10.6 days. Throughout December, 3.27" (83mm) of precipitation is accumulated. In Rockwood, during the entire year, the rain falls for 168.6 days and collects up to 34.09" (866mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Rockwood, in December, snow falls for 12 days, with typically accumulated 5.98" (152mm) of snow. In Rockwood, Pennsylvania, during the entire year, snow falls for 63.9 days and aggregates up to 33.54" (852mm) of snow.Daylight
The month with the shortest days in Rockwood is December, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:19 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 5:01 pm EST.
Sunshine
In Rockwood, the average sunshine in December is 3.2h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 1 during December leads to these advisories:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December in Rockwood?
How many days does it rain in December in Rockwood?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Rockwood have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Rockwood, PA
- Average high temperature in December: 36.7°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in December
Rockwood, PA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Rockwood, PA
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Rockwood, PA
- Average humidity in December: 86%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are April and July (79%).
Average rainfall in December
Rockwood, PA
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is November (1.97").
Average rainfall days in December
Rockwood, PA
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is May (21 days).
The month with the least rainy days is February (8.1 days).
Average snowfall in December
Rockwood, PA
- Average snowfall in December: 5.98"
The month with the highest snowfall is January (7.48").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Rockwood, PA
- Average snowfall days in December: 12 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rockwood, 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 24min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in December
Rockwood, PA
- Average sunshine days in December: 10.3 days
The month with the most sunshine days is November (14.2 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in December
Rockwood, 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
Rockwood, PA
- Average cloud cover in December: 70
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 41).
Average visibility in December
Rockwood, PA
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).
Rockwood, Pennsylvania, USA
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