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
With December's arrival, Eighty Four sees a decrease in average high-temperatures, moving from a frosty 49.1°F (9.5°C) in November to a wintry 40.1°F (4.5°C). During the month of December, Eighty Four experiences a steady low-temperature average of 28.6°F (-1.9°C).Humidity
In December, the average relative humidity in Eighty Four is 83%.Rainfall
In Eighty Four, in December, it is raining for 7.5 days, with typically 0.71" (18mm) of accumulated precipitation. In Eighty Four, during the entire year, the rain falls for 120.6 days and collects up to 9.49" (241mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. In Eighty Four, Pennsylvania, during December, snow falls for 5.5 days and regularly aggregates up to 0.43" (11mm) of snow. Throughout the year, there are 28.5 snowfall days, and 2.95" (75mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Eighty Four.On the first day of the month, sunrise is at 7:24 am and sunset at 4:55 pm. On the last day of December, in Eighty Four, sunrise is at 7:42 am and sunset at 5:04 pm EST.
Sunshine
The average sunshine in December in Eighty Four is 3.5h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
How cold is December in Eighty Four?
What is the average humidity in December in Eighty Four?
How many days does it rain in December in Eighty Four?
How much does it snow in Eighty Four in December?
What is the month with the shortest days in Eighty Four?
How many hours of daylight does Eighty Four have in December?
When are sunrise and sunset in December in Eighty Four?
How long on average sun shines in December in Eighty Four?
What is the month with the lowest UV index in Eighty Four?
How high is the UV index in December in Eighty Four?
Average temperature in December
Eighty Four, PA
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 28.6°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
Eighty Four, 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
Eighty Four, PA
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in December
Eighty Four, PA
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (76%).
Average rainfall in December
Eighty Four, PA
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is July (1.06").
The driest month (with the least rainfall) is September (0.55").
Average rainfall days in December
Eighty Four, PA
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is May (14 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Eighty Four, PA
- Average snowfall in December: 0.43"
The months with the highest snowfall are January and February (0.79").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Eighty Four, PA
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Eighty Four, 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 24min).
- Average sunshine in December: 3h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Eighty Four, PA
- Average sunshine days in December: 19.6 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (13.5 days).
Average UV index in December
Eighty Four, PA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (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
Eighty Four, PA
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Eighty Four, PA
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Eighty Four, Pennsylvania, USA
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