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 arrival of December indicates a decrease in the average high-temperature, moving from a frosty 48.2°F (9°C) in November to a cold 39.2°F (4°C). An average low-temperature of 28°F (-2.2°C) is common during the nights of December.Humidity
The average relative humidity in December is 81%.Rainfall
In Leck Kill, during December, the rain falls for 5.5 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Leck Kill, Pennsylvania, during the entire year, the rain falls for 100.8 days and collects up to 8.5" (216mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Leck Kill, Pennsylvania, during December, snow falls for 4.2 days and regularly aggregates up to 0.24" (6mm) of snow. Throughout the year, there are 21.7 snowfall days, and 2.48" (63mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:11 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:49 pm EST.
Sunshine
The average sunshine in December is 4.3h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 2 during December translates into the following guidance:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Around midday, solar radiation is most harmful; hence, exposure should be limited. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during 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 in Leck Kill?
How many hours of daylight does Leck Kill have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Leck Kill, PA
- Average high temperature in December: 39.2°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in December: 28°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in December
Leck Kill, 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
Leck Kill, PA
- Average wind speed in December: 7.7mph
The windiest months (with the highest average wind speed) are March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Leck Kill, PA
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are March and April (77%).
Average rainfall in December
Leck Kill, PA
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is July (1.1").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in December
Leck Kill, PA
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in December
Leck Kill, PA
- Average snowfall in December: 0.24"
The month with the highest snowfall is January (0.75").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Leck Kill, PA
- Average snowfall days in December: 4.2 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Leck Kill, 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 18min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Leck Kill, PA
- Average sunshine days in December: 22.5 days
The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is July (14.6 days).
Average UV index in December
Leck Kill, PA
- Average UV index in December: 2
The month with the highest UV index is June (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
Leck Kill, PA
- Average cloud cover in December: 54
The months with the most cloud cover are February and December (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Leck Kill, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August, September and October (5mi).
Leck Kill, Pennsylvania, USA
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