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
With December's arrival, Keeneyville's weather changes as the average high-temperature falls from a chilly 44.1°F (6.7°C) in November to a cold 34.7°F (1.5°C). During the month of December, Keeneyville's nighttime temperature lowers to an average of 25°F (-3.9°C).Humidity
In December, the average relative humidity in Keeneyville is 85%.Rainfall
In Keeneyville, during December, the rain falls for 12.1 days and regularly aggregates up to 2.48" (63mm) of precipitation. In Keeneyville, during the entire year, the rain falls for 175.2 days and collects up to 30.39" (772mm) of precipitation.Snowfall
Months with snowfall in Keeneyville are January through May, October through December. In Keeneyville, Pennsylvania, during December, snow falls for 16.1 days and regularly aggregates up to 7.09" (180mm) of snow. Throughout the year, in Keeneyville, there are 80.1 snowfall days, and 36.85" (936mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Keeneyville.On the first day of December in Keeneyville, sunrise is at 7:17 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:48 pm EST.
Sunshine
The month with the least sunshine in Keeneyville is December, with an average of 3.1h of sunshine.UV index
The months with the lowest UV index in Keeneyville are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 1 during December translates into the following guidance:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Keeneyville in December?
What is the average humidity in December in Keeneyville?
How many days does it rain in December in Keeneyville?
How much does it snow in Keeneyville in December?
What is the month with the shortest days in Keeneyville?
What is the average length of the day in December in Keeneyville?
What time are sunrise and sunset in December in Keeneyville?
What is the month with the least sunshine in Keeneyville?
How long on average sun shines in December in Keeneyville?
What are the months with the lowest UV index in Keeneyville?
How high is the UV index in December in Keeneyville?
Average temperature in December
Keeneyville, PA
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in December: 25°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in December
Keeneyville, PA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Keeneyville, PA
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Keeneyville, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is June (78%).
Average rainfall in December
Keeneyville, PA
- Average rainfall in December: 2.48"
The wettest month (with the highest rainfall) is April (3.35").
The driest month (with the least rainfall) is November (1.97").
Average rainfall days in December
Keeneyville, PA
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is February (8.5 days).
Average snowfall in December
Keeneyville, PA
- Average snowfall in December: 7.09"
The month with the highest snowfall is February (9.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Keeneyville, PA
- Average snowfall days in December: 16.1 days
The month with the highest number of snowfall days is January (18.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Keeneyville, 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: 3h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in December
Keeneyville, PA
- Average sunshine days in December: 7.8 days
The month with the most sunshine days is September (14 days).
The month with the least sunshine days is February (7.4 days).
Average UV index in December
Keeneyville, 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
Keeneyville, PA
- Average cloud cover in December: 69
The month with the most cloud cover is December (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in December
Keeneyville, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Keeneyville, Pennsylvania, USA
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