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 coincides with a drop in the average high-temperature, decreasing from November's cool 50.9°F (10.5°C) to a wintry 41.9°F (5.5°C). December nights in Caln Meeting House are marked by an average low-temperature of 30.6°F (-0.8°C).Humidity
In Caln Meeting House, the average relative humidity in December is 79%.Rainfall
In Caln Meeting House, during December, the rain falls for 8.6 days and regularly aggregates up to 2.05" (52mm) of precipitation. In Caln Meeting House, during the entire year, the rain falls for 145.6 days and collects up to 26.81" (681mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Caln Meeting House, in December, during 2 snowfall days, 1.54" (39mm) of snow is typically accumulated. In Caln Meeting House, during the entire year, snow falls for 17.2 days and aggregates up to 10.47" (266mm) of snow.Daylight
December has the shortest days of the year in Caln Meeting House, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:06 am and sunset at 4:38 pm. On the last day of December, in Caln Meeting House, sunrise is at 7:24 am and sunset at 4:47 pm EST.
Sunshine
The average sunshine in December is 4.8h.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 of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The average daily UV index of 2 in December transforms into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Frequently asked questions
How cold does it get in Caln Meeting House in December?
What is the average humidity in December in Caln Meeting House?
How many days does it rain in December in Caln Meeting House?
How much does it snow in Caln Meeting House in December?
What is the month with the shortest days in Caln Meeting House?
What is the average length of the day in December in Caln Meeting House?
When are sunrise and sunset in December in Caln Meeting House?
How many hours of sunshine does Caln Meeting House have in December?
What are the months with the lowest UV index in Caln Meeting House?
How high is the UV index in December in Caln Meeting House?
Average temperature in December
Caln Meeting House, PA
- Average high temperature in December: 41.9°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in December: 30.6°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in December
Caln Meeting House, 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 (29.94"Hg).
Average wind speed in December
Caln Meeting House, PA
- Average wind speed in December: 8mph
The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in December
Caln Meeting House, PA
- Average humidity in December: 79%
The months with the highest relative humidity are February, May and October (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Caln Meeting House, PA
- Average rainfall in December: 2.05"
The wettest month (with the highest rainfall) is August (3.31").
The driest month (with the least rainfall) is February (1.61").
Average rainfall days in December
Caln Meeting House, PA
- Average rainfall days in December: 8.6 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in December
Caln Meeting House, PA
- Average snowfall in December: 1.54"
The month with the highest snowfall is March (3.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Caln Meeting House, PA
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Caln Meeting House, 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: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Caln Meeting House, PA
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in December
Caln Meeting House, 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
Caln Meeting House, PA
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Caln Meeting House, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Caln Meeting House, Pennsylvania, USA
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