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
December brings a minor decrease, with the average high-temperature reducing from a chilly 44.1°F (6.7°C) in November to an icy 34.7°F (1.5°C). Coolidge Hollow's temperature in December lowers to a consistent average of 25°F (-3.9°C) during the nights.Humidity
In Coolidge Hollow, the average relative humidity in December is 85%.Rainfall
In Coolidge Hollow, in December, it is raining for 12.1 days, with typically 2.48" (63mm) of accumulated precipitation. In Coolidge Hollow, during the entire year, the rain falls for 175.2 days and collects up to 30.39" (772mm) of precipitation.Snowfall
Months with snowfall in Coolidge Hollow are January through May, October through December. In Coolidge Hollow, during December, snow falls for 16.1 days and regularly aggregates up to 7.09" (180mm) of snow. In Coolidge Hollow, during the entire year, snow falls for 80.1 days and aggregates up to 36.85" (936mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:17 am and sunset at 4:39 pm. On the last day of December, in Coolidge Hollow, sunrise is at 7:36 am and sunset at 4:48 pm EST.
Sunshine
The month with the least sunshine in Coolidge Hollow, Pennsylvania, is December, with an average of 3.1h of sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Coolidge Hollow. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 1 during December translates into the following directions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Coolidge Hollow in December?
What is the average humidity in December in Coolidge Hollow?
How many days does it rain in December in Coolidge Hollow?
How many days does it snow in December in Coolidge Hollow?
What is the month with the shortest days in Coolidge Hollow?
How many hours of daylight does Coolidge Hollow have in December?
When is the sunrise / sunset in December in Coolidge Hollow?
What is the month with the least sunshine in Coolidge Hollow?
How many hours of sunshine does Coolidge Hollow have in December?
What are the months with the lowest UV index in Coolidge Hollow?
What is the UV index reading in December in Coolidge Hollow?
Average temperature in December
Coolidge Hollow, PA
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in December: 25°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in December
Coolidge Hollow, 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
Coolidge Hollow, PA
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Coolidge Hollow, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is June (78%).
Average rainfall in December
Coolidge Hollow, PA
- Average rainfall in December: 2.48"
The wettest month (with the highest rainfall) is April (3.35").
The driest month (with the least rainfall) is November (1.97").
Average rainfall days in December
Coolidge Hollow, PA
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is February (8.5 days).
Average snowfall in December
Coolidge Hollow, PA
- Average snowfall in December: 7.09"
The month with the highest snowfall is February (9.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Coolidge Hollow, PA
- Average snowfall days in December: 16.1 days
The month with the highest number of snowfall days is January (18.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Coolidge Hollow, 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 month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in December
Coolidge Hollow, PA
- Average sunshine days in December: 7.8 days
The month with the most sunshine days is September (14 days).
The month with the least sunshine days is February (7.4 days).
Average UV index in December
Coolidge Hollow, 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
Coolidge Hollow, PA
- Average cloud cover in December: 69
The month with the most cloud cover is December (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in December
Coolidge Hollow, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Coolidge Hollow, Pennsylvania, USA
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