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 includes a small decrease in the average high-temperature, from a cool 54°F (12.2°C) to a frosty 45.3°F (7.4°C). During December, Williamsport records an average temperature of 33.1°F (0.6°C) at night.Humidity
The months with the highest humidity in Williamsport, Kentucky, are February and December, with an average relative humidity of 80%.Rainfall
In Williamsport, during December, the rain falls for 13.3 days and regularly aggregates up to 2.68" (68mm) of precipitation. In Williamsport, during the entire year, the rain falls for 173.4 days and collects up to 30.24" (768mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In December, it is snowing for 6.6 days. Throughout December, 2.8" (71mm) of snow is accumulated. Throughout the year, in Williamsport, Kentucky, there are 35.6 snowfall days, and 13.82" (351mm) of snow is accumulated.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year in Williamsport, Kentucky.On the first day of December, sunrise is at 7:28 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:22 pm EST.
Sunshine
In Williamsport, Kentucky, the average sunshine in December is 4.5h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 2 during December translates into the following guidance:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
What is the temperature in December in Williamsport?
What is the most humid month in Williamsport?
What is the average humidity in December in Williamsport?
How many days does it rain in December in Williamsport?
How many days does it snow in December in Williamsport?
What is the month with the shortest days in Williamsport?
What is the average length of the day in December in Williamsport?
When is the sunrise / sunset in December in Williamsport?
How long on average sun shines in December in Williamsport?
What are the months with the lowest UV index in Williamsport?
How high is the UV index in December in Williamsport?
Average temperature in December
Williamsport, KY
- Average high temperature in December: 45.3°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (40.3°F).
- Average low temperature in December: 33.1°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in December
Williamsport, KY
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
Williamsport, KY
- Average wind speed in December: 6.2mph
The windiest months (with the highest average wind speed) are January, February and April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Williamsport, KY
- Average humidity in December: 80%
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is August (74%).
Average rainfall in December
Williamsport, KY
- Average rainfall in December: 2.68"
The wettest month (with the highest rainfall) is February (3.27").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in December
Williamsport, KY
- Average rainfall days in December: 13.3 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (10.8 days).
Average snowfall in December
Williamsport, KY
- Average snowfall in December: 2.8"
The month with the highest snowfall is February (3.78").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Williamsport, KY
- Average snowfall days in December: 6.6 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Williamsport, KY
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 4h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Williamsport, KY
- Average sunshine days in December: 13.1 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in December
Williamsport, KY
- 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 and December (UV index 2).
Average cloud cover in December
Williamsport, KY
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Williamsport, KY
- Average visibility in December: 5mi
The months with the highest visibility are April, June, August, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September and December (5mi).
Williamsport, Kentucky, USA
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