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 signals a slight drop in average high-temperature, sliding from November's fresh 50.2°F (10.1°C) to a wintry 41.4°F (5.2°C). During December, Stonetown records an average temperature of 30°F (-1.1°C) at night.Humidity
In Stonetown, the average relative humidity in December is 80%.Rainfall
In Stonetown, in December, during 8.4 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. In Stonetown, during the entire year, the rain falls for 129 days and collects up to 13.5" (343mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Stonetown, during December, snow falls for 3.2 days and regularly aggregates up to 0.39" (10mm) of snow. In Stonetown, during the entire year, snow falls for 19.4 days and aggregates up to 4.45" (113mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:07 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:47 pm EST.
Sunshine
In December, the average sunshine is 4.8h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Stonetown have in December?
What are the months with the lowest UV index?
What is the UV index reading in December in Stonetown?
Average temperature in December
Stonetown, PA
- Average high temperature in December: 41.4°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in December
Stonetown, PA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Stonetown, PA
- Average wind speed in December: 7.8mph
The windiest months (with the highest average wind speed) are January and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Stonetown, PA
- Average humidity in December: 80%
The months with the highest relative humidity are February and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Stonetown, PA
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is August (1.69").
The driest month (with the least rainfall) is February (0.79").
Average rainfall days in December
Stonetown, PA
- Average rainfall days in December: 8.4 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in December
Stonetown, PA
- Average snowfall in December: 0.39"
The month with the highest snowfall is February (1.54").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Stonetown, PA
- Average snowfall days in December: 3.2 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Stonetown, 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: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Stonetown, PA
- Average sunshine days in December: 19.3 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in December
Stonetown, PA
- Average UV index in December: 2
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Stonetown, PA
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Stonetown, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, November and December (6mi).
The months with the lowest visibility are May, September and October (5mi).
Stonetown, Pennsylvania, USA
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