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
In Armagh, the beginning of December is marked by a lowered average high-temperature, shifting from November's chilly 46.4°F (8°C) to a wintry 36.7°F (2.6°C). Armagh records an average low-temperature of 26.6°F (-3°C) throughout the month of December.Humidity
In Armagh, Pennsylvania, the average relative humidity in December is 85%.Rainfall
In Armagh, in December, during 11.1 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. Throughout the year, there are 176.9 rainfall days, and 32.87" (835mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 12.8 days. Throughout December, 6.46" (164mm) of snow is accumulated. In Armagh, during the entire year, snow falls for 67.6 days and aggregates up to 32.83" (834mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Armagh.On the first day of December in Armagh, Pennsylvania, sunrise is at 7:20 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:59 pm EST.
Sunshine
In Armagh, the average sunshine in December is 3.4h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Armagh. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 1 in December translates into these instructions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
How cold is December in Armagh?
What is the average humidity in December in Armagh?
How much does it rain in Armagh in December?
How many days does it snow in December in Armagh?
What is the month with the shortest days in Armagh?
How many hours of daylight does Armagh have in December?
When is the sunrise / sunset in December in Armagh?
How many hours of sunshine does Armagh have in December?
What is the month with the lowest UV index in Armagh?
How high is the UV index in December in Armagh?
Average temperature in December
Armagh, PA
- Average high temperature in December: 36.7°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 (30.7°F).
- Average low temperature in December: 26.6°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Armagh, 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
Armagh, PA
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Armagh, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April and July (78%).
Average rainfall in December
Armagh, PA
- Average rainfall in December: 3.03"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is November (1.97").
Average rainfall days in December
Armagh, PA
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is February (9.5 days).
Average snowfall in December
Armagh, PA
- Average snowfall in December: 6.46"
The month with the highest snowfall is January (7.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Armagh, PA
- Average snowfall days in December: 12.8 days
The month with the highest number of snowfall days is January (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Armagh, 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 18min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Armagh, PA
- Average sunshine days in December: 9.8 days
The month with the most sunshine days is November (13.6 days).
The month with the least sunshine days is January (7 days).
Average UV index in December
Armagh, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Armagh, PA
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Armagh, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Armagh, Pennsylvania, USA
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