December weather forecastArmagh, PA
December
Weather in December
The first month of the winter, December, is still a cold month in Armagh, Pennsylvania, with temperature in the range of an average low of 26.6°F (-3°C) and an average high of 36.7°F (2.6°C).Temperature
In Armagh, the average high-temperature in December decreases from a frosty 46.4°F (8°C) in November to an icy 36.7°F (2.6°C). During the month of December, an average temperature of 26.6°F (-3°C) is noted during the nights.Humidity
In Armagh, 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. In Armagh, during the entire year, the rain falls for 176.9 days and collects up to 32.87" (835mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 12.8 days. Throughout December, 6.46" (164mm) of snow is accumulated. Throughout the year, there are 67.6 snowfall days, and 32.83" (834mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:20 am and sunset at 4:50 pm. On the last day of December, sunrise is at 7:39 am and sunset at 4:59 pm EST.
Sunshine
In December, the average sunshine is 3.4h.UV index
December is the month with the lowest UV index in Armagh, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 18min
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 24min
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).
