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 implies a gentle temperature shift, with average high-temperatures reducing from November's frosty 47.5°F (8.6°C) to a cold 37.9°F (3.3°C). During the month of December, West Lebanon's nighttime temperature lowers to an average of 27.1°F (-2.7°C).Humidity
The average relative humidity in December is 85%.Rainfall
In West Lebanon, Pennsylvania, in December, during 11.5 rainfall days, 1.97" (50mm) of precipitation is typically accumulated. In West Lebanon, during the entire year, the rain falls for 162.4 days and collects up to 23.43" (595mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In West Lebanon, Pennsylvania, in December, snow falls for 12.6 days, with typically accumulated 4.41" (112mm) of snow. Throughout the year, in West Lebanon, there are 62.7 snowfall days, and 21.3" (541mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in West Lebanon.On the first day of the month, sunrise is at 7:22 am and sunset at 4:51 pm. On the last day of December, in West Lebanon, sunrise is at 7:40 am and sunset at 5:00 pm EST.
Sunshine
The average sunshine in December in West Lebanon 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 value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high daily UV index of 1 during December translates into the following directions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
How cold does it get in West Lebanon in December?
What is the average humidity in December in West Lebanon?
How many days does it rain in December in West Lebanon?
How much does it snow in West Lebanon in December?
What is the month with the shortest days in West Lebanon?
What is the average length of the day in December in West Lebanon?
When is the sunrise / sunset in December in West Lebanon?
How many hours of sunshine does West Lebanon have in December?
When is the lowest UV index in West Lebanon?
How high is the UV index in December in West Lebanon?
Average temperature in December
West Lebanon, PA
- Average high temperature in December: 37.9°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 (31.6°F).
- Average low temperature in December: 27.1°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in December
West Lebanon, PA
- Average pressure in December: 30.11"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
West Lebanon, PA
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
West Lebanon, PA
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April, June, July and August (78%).
Average rainfall in December
West Lebanon, PA
- Average rainfall in December: 1.97"
The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is November (1.3").
Average rainfall days in December
West Lebanon, PA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in December
West Lebanon, PA
- Average snowfall in December: 4.41"
The month with the highest snowfall is January (5.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
West Lebanon, PA
- Average snowfall days in December: 12.6 days
The month with the highest number of snowfall days is January (17.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
West Lebanon, 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: 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
West Lebanon, PA
- Average sunshine days in December: 10.1 days
The month with the most sunshine days is September (14.8 days).
The months with the least sunshine days are January and February (7.8 days).
Average UV index in December
West Lebanon, 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
West Lebanon, PA
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in December
West Lebanon, 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).
West Lebanon, Pennsylvania, USA
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