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
The shift from November to December corresponds with a decrease in the average high-temperature, down to an icy 34.7°F (1.5°C) from a chilly 44.1°F (6.7°C). Youngsville records a steady low-temperature average of 25.2°F (-3.8°C) during December.Humidity
In December, the average relative humidity in Youngsville is 88%.Rainfall
In Youngsville, Pennsylvania, in December, during 10.2 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. Throughout the year, in Youngsville, there are 162.1 rainfall days, and 21.81" (554mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall in Youngsville is December, when snow falls for 18.1 days and typically aggregates up to 6.77" (172mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:25 am and sunset at 4:47 pm. On the last day of December, in Youngsville, sunrise is at 7:44 am and sunset at 4:56 pm EST.
Sunshine
In Youngsville, the average sunshine in December is 2.3h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Youngsville. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 1 in December transforms into the following instructions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
How cold is December in Youngsville?
What is the average humidity in December in Youngsville?
How many days does it rain in December in Youngsville?
What is the snowiest month in Youngsville?
How many days does it snow in December in Youngsville?
What is the month with the shortest days in Youngsville?
What is the average length of the day in December in Youngsville?
What time are sunrise and sunset in December in Youngsville?
How long on average sun shines in December in Youngsville?
When is the lowest UV index in Youngsville?
How high is the UV index in December in Youngsville?
Average temperature in December
Youngsville, PA
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in December: 25.2°F
The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in December
Youngsville, PA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Youngsville, PA
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in December
Youngsville, PA
- Average humidity in December: 88%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is May (80%).
Average rainfall in December
Youngsville, PA
- Average rainfall in December: 1.81"
The wettest month (with the highest rainfall) is April (2.52").
The driest month (with the least rainfall) is March (1.42").
Average rainfall days in December
Youngsville, PA
- Average rainfall days in December: 10.2 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in December
Youngsville, PA
- Average snowfall in December: 6.77"
The month with the highest snowfall is December (6.77").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Youngsville, PA
- Average snowfall days in December: 18.1 days
The month with the highest number of snowfall days is January (22 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Youngsville, PA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 2h and 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 6min).
Average sunshine days in December
Youngsville, PA
- Average sunshine days in December: 6.6 days
The month with the most sunshine days is September (12.9 days).
The month with the least sunshine days is January (5.1 days).
Average UV index in December
Youngsville, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Youngsville, PA
- Average cloud cover in December: 77
The month with the most cloud cover is January (Cloud cover 80).
The months with the least cloud cover are July and August (Cloud cover 40).
Average visibility in December
Youngsville, PA
- Average visibility in December: 4mi
The months with the highest visibility are March, April, May, June, July, September, October and November (5mi).
The months with the lowest visibility are January, February, August and December (4mi).
Youngsville, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location
