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
The onset of December introduces a moderate change in Elmbrook Terrace's weather, with average high-temperatures falling from November's chilly 45.1°F (7.3°C) to a cold 35.6°F (2°C). During the month of December, the temperature generally drops to a low average of 25.2°F (-3.8°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 85%.Rainfall
In Elmbrook Terrace, Pennsylvania, in December, it is raining for 8.1 days, with typically 1.54" (39mm) of accumulated precipitation. In Elmbrook Terrace, during the entire year, the rain falls for 139.9 days and collects up to 22.28" (566mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Elmbrook Terrace, during December, snow falls for 8.4 days and regularly aggregates up to 4.21" (107mm) of snow. Throughout the year, in Elmbrook Terrace, there are 48.4 snowfall days, and 22.01" (559mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:09 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:28 am and sunset at 4:43 pm EST.
Sunshine
The average sunshine in December is 3.6h.UV index
The months with the lowest UV index in Elmbrook Terrace are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index, 1 during December, leads to the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What are the most humid months?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Elmbrook Terrace have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Elmbrook Terrace have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Elmbrook Terrace, PA
- Average high temperature in December: 35.6°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in December: 25.2°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Elmbrook Terrace, PA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Elmbrook Terrace, PA
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Elmbrook Terrace, PA
- Average humidity in December: 85%
The months with the highest relative humidity are February and December (85%).
The months with the lowest relative humidity are April, June and July (78%).
Average rainfall in December
Elmbrook Terrace, PA
- Average rainfall in December: 1.54"
The wettest months (with the highest rainfall) are May and July (2.4").
The driest months (with the least rainfall) are January and September (1.38").
Average rainfall days in December
Elmbrook Terrace, PA
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in December
Elmbrook Terrace, PA
- Average snowfall in December: 4.21"
The month with the highest snowfall is March (5.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Elmbrook Terrace, PA
- Average snowfall days in December: 8.4 days
The month with the highest number of snowfall days is February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Elmbrook Terrace, PA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days in December
Elmbrook Terrace, PA
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is January (18.4 days).
The month with the least sunshine days is May (11 days).
Average UV index in December
Elmbrook Terrace, 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
Elmbrook Terrace, PA
- Average cloud cover in December: 64
The months with the most cloud cover are February and December (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in December
Elmbrook Terrace, 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).
Elmbrook Terrace, Pennsylvania, USA
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