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 shows a mild decline in the average high-temperature, falling from November's cool 51.1°F (10.6°C) to a cold 41.9°F (5.5°C). Throughout December, the nighttime temperature averages to a subzero cold 30°F (-1.1°C).Humidity
In Silver Spring, the average relative humidity in December is 79%.Rainfall
In Silver Spring, Pennsylvania, in December, it is raining for 8.2 days, with typically 1.1" (28mm) of accumulated precipitation. Throughout the year, there are 125.9 rainfall days, and 15.08" (383mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Silver Spring, during December, snow falls for 2.6 days and regularly aggregates up to 0.79" (20mm) of snow. In Silver Spring, during the entire year, snow falls for 16.4 days and aggregates up to 5.04" (128mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Silver Spring.On the first day of the month, sunrise is at 7:09 am and sunset at 4:40 pm. On the last day of December, in Silver Spring, Pennsylvania, sunrise is at 7:27 am and sunset at 4:50 pm EST.
Sunshine
The average sunshine in December is 4.8h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 2 in December translates into this advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
How cold is it in Silver Spring in December?
What is the average humidity in December in Silver Spring?
How much does it rain in Silver Spring in December?
How many days does it snow in December in Silver Spring?
What is the month with the shortest days in Silver Spring?
How many hours of daylight does Silver Spring have in December?
When is the sunrise / sunset in December in Silver Spring?
How long on average sun shines in December in Silver Spring?
What are the months with the lowest UV index in Silver Spring?
What is the UV index reading in December in Silver Spring?
Average temperature in December
Silver Spring, PA
- Average high temperature in December: 41.9°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in December
Silver Spring, 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
Silver Spring, PA
- Average wind speed in December: 8.3mph
The windiest months (with the highest average wind speed) are February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Silver Spring, PA
- Average humidity in December: 79%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Silver Spring, PA
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is August (2.09").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days in December
Silver Spring, PA
- Average rainfall days in December: 8.2 days
The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in December
Silver Spring, PA
- Average snowfall in December: 0.79"
The month with the highest snowfall is March (1.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Silver Spring, PA
- Average snowfall days in December: 2.6 days
The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Silver Spring, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Silver Spring, PA
- Average sunshine days in December: 19.9 days
The month with the most sunshine days is November (21.4 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in December
Silver Spring, PA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Silver Spring, PA
- Average cloud cover in December: 49
The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Silver Spring, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, October, November and December (6mi).
The months with the lowest visibility are May, August and September (5mi).
Silver Spring, Pennsylvania, USA
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