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
A change in temperatures is noted as November gives way to December, with average highs reducing from a chilly 48°F (8.9°C) to a wintry 38.5°F (3.6°C). Throughout the month of December, Stonerville observes an average nighttime temperature of 27.5°F (-2.5°C).Humidity
In December, the average relative humidity is 85%.Rainfall
In Stonerville, during December, the rain falls for 10.3 days and regularly aggregates up to 2.17" (55mm) of precipitation. Throughout the year, there are 162.5 rainfall days, and 24.76" (629mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Stonerville, in December, during 9 snowfall days, 4.96" (126mm) of snow is typically accumulated. Throughout the year, there are 57.1 snowfall days, and 26.97" (685mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:20 am and sunset at 4:53 pm. On the last day of December, in Stonerville, sunrise is at 7:39 am and sunset at 5:03 pm EST.
Sunshine
In Stonerville, the average sunshine in December is 3.5h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Stonerville have in December?
When are sunrise and sunset in December in Stonerville?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Stonerville, PA
- Average high temperature in December: 38.5°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (32.7°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in December
Stonerville, 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
Stonerville, PA
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Stonerville, PA
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are June, July and August (78%).
Average rainfall in December
Stonerville, PA
- Average rainfall in December: 2.17"
The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is November (1.34").
Average rainfall days in December
Stonerville, PA
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is May (20.3 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in December
Stonerville, PA
- Average snowfall in December: 4.96"
The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Stonerville, PA
- Average snowfall days in December: 9 days
The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Stonerville, 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 3min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Stonerville, PA
- Average sunshine days in December: 14 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is May (8.3 days).
Average UV index in December
Stonerville, PA
- Average UV index in December: 2
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, February, March, October, November and December (UV index 2).
Average cloud cover in December
Stonerville, PA
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Stonerville, 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).
Stonerville, Pennsylvania, USA
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