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
December's arrival correlates with a reduction in the average high-temperature, down from a chilly 46.2°F (7.9°C) in November to a wintry 36.5°F (2.5°C). The low-temperature average for Arcadia during December stands at a freezing cold 26.4°F (-3.1°C).Humidity
The average relative humidity in December is 85%.Rainfall
In Arcadia, in December, it is raining for 7.2 days, with typically 0.94" (24mm) of accumulated precipitation. Throughout the year, there are 121.6 rainfall days, and 10.75" (273mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Arcadia, during December, snow falls for 9.2 days and regularly aggregates up to 2.01" (51mm) of snow. In Arcadia, during the entire year, snow falls for 49.1 days and aggregates up to 10.43" (265mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:20 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:57 pm EST.
Sunshine
In Arcadia, Pennsylvania, the average sunshine in December is 3.3h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. It's recommended to limit sun exposure when its radiation is at its peak during midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Arcadia have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Arcadia have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Arcadia, PA
- Average high temperature in December: 36.5°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 (30.4°F).
- Average low temperature in December: 26.4°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 (18.5°F).
Average pressure in December
Arcadia, 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 (29.95"Hg).
Average wind speed in December
Arcadia, PA
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Arcadia, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, June, July and August (78%).
Average rainfall in December
Arcadia, PA
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is May (1.26").
The driest month (with the least rainfall) is September (0.55").
Average rainfall days in December
Arcadia, PA
- Average rainfall days in December: 7.2 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in December
Arcadia, PA
- Average snowfall in December: 2.01"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Arcadia, PA
- Average snowfall days in December: 9.2 days
The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Arcadia, 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: 3h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Arcadia, PA
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in December
Arcadia, 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
Arcadia, PA
- Average cloud cover in December: 68
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Arcadia, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Arcadia, Pennsylvania, USA
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