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 arrival of December corresponds with a reduction in the average high-temperature, down from November's chilly 47.8°F (8.8°C) to a wintry 38.3°F (3.5°C). Marion Heights's nighttime temperature in December drops to an average of 27.7°F (-2.4°C).Humidity
In Marion Heights, the average relative humidity in December is 81%.Rainfall
In December, in Marion Heights, the rain falls for 8.3 days. Throughout December, 1.1" (28mm) of precipitation is accumulated. Throughout the year, in Marion Heights, there are 129.2 rainfall days, and 16.42" (417mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Marion Heights, in December, during 5.5 snowfall days, 1.06" (27mm) of snow is typically accumulated. Throughout the year, there are 28.6 snowfall days, and 9.37" (238mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Marion Heights.On the first day of the month, sunrise is at 7:11 am and sunset at 4:38 pm. On the last day of December, sunrise is at 7:29 am and sunset at 4:48 pm EST.
Sunshine
In Marion Heights, the average sunshine in December is 4.3h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Marion Heights. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In December, an average UV index of 2 transforms into the following instructions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is it in Marion Heights in December?
What is the average humidity in December in Marion Heights?
How much does it rain in Marion Heights in December?
How much does it snow in Marion Heights in December?
What is the month with the shortest days in Marion Heights?
What is the average length of the day in December in Marion Heights?
When are sunrise and sunset in December in Marion Heights?
How many hours of sunshine does Marion Heights have in December?
When is the lowest UV index in Marion Heights?
How high is the UV index in December in Marion Heights?
Average temperature in December
Marion Heights, PA
- Average high temperature in December: 38.3°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in December
Marion Heights, 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
Marion Heights, PA
- Average wind speed in December: 7.6mph
The windiest months (with the highest average wind speed) are March and April (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Marion Heights, PA
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are March and April (77%).
Average rainfall in December
Marion Heights, PA
- Average rainfall in December: 1.1"
The wettest months (with the highest rainfall) are May and July (1.97").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in December
Marion Heights, PA
- Average rainfall days in December: 8.3 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in December
Marion Heights, PA
- Average snowfall in December: 1.06"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Marion Heights, PA
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is January (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
Marion Heights, PA
- Average daylight in December: 9h and 2min
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 18min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in December
Marion Heights, PA
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is May (12.5 days).
Average UV index in December
Marion Heights, PA
- Average UV index in December: 2
The month with the highest UV index is June (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
Marion Heights, PA
- Average cloud cover in December: 55
The month with the most cloud cover is February (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Marion Heights, PA
- Average visibility in December: 6mi
The months with the highest visibility are March, April, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and October (5mi).
Marion Heights, Pennsylvania, USA
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