December weather forecastLoyalhanna, PA
December
Weather in December
The first month of the winter, December, is also an icy month in Loyalhanna, Pennsylvania, with an average temperature ranging between max 38.8°F (3.8°C) and min 27.5°F (-2.5°C).Temperature
December weather is marked by a drop in the average high-temperature, falling from a frosty 48°F (8.9°C) in November to a wintry 38.8°F (3.8°C). In December, Loyalhanna reports a consistent average low-temperature of 27.5°F (-2.5°C) during the nights.Humidity
In Loyalhanna, the average relative humidity in December is 84%.Rainfall
In Loyalhanna, in December, during 11.5 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, there are 173.8 rainfall days, and 25.55" (649mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Loyalhanna, in December, snow falls for 11.8 days, with typically accumulated 4.17" (106mm) of snow. In Loyalhanna, during the entire year, snow falls for 58.9 days and aggregates up to 18.62" (473mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December in Loyalhanna, Pennsylvania, sunrise is at 7:21 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:01 pm EST.
Sunshine
The average sunshine in December is 3.5h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In December, an average UV index of 1 transforms into the following instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Loyalhanna, PA
- Average high temperature in December: 38.8°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in December
Loyalhanna, 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
Loyalhanna, PA
- Average wind speed in December: 8.2mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Loyalhanna, PA
- Average humidity in December: 84%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, June, July and August (78%).
Average rainfall in December
Loyalhanna, PA
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is November (1.38").
Average rainfall days in December
Loyalhanna, PA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (20.4 days).
The month with the least rainy days is January (9.5 days).
Average snowfall in December
Loyalhanna, PA
- Average snowfall in December: 4.17"
The month with the highest snowfall is January (4.96").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Loyalhanna, PA
- Average snowfall days in December: 11.8 days
The month with the highest number of snowfall days is January (17.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Loyalhanna, PA
- Average daylight in December: 9h and 24min
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: 3h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Loyalhanna, PA
- Average sunshine days in December: 9.9 days
The month with the most sunshine days is November (14.4 days).
The month with the least sunshine days is January (7 days).
Average UV index in December
Loyalhanna, PA
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Loyalhanna, PA
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Loyalhanna, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The month with the lowest visibility is January (4mi).
