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 reveals a small adjustment in temperature, transitioning from an average high of a cool 54°F (12.2°C) in November to a frosty 45.1°F (7.3°C). South Williamson experiences a mean low-temperature of 33.1°F (0.6°C) during December.Humidity
In South Williamson, the average relative humidity in December is 80%.Rainfall
In South Williamson, in December, during 11 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. In South Williamson, during the entire year, the rain falls for 163.6 days and collects up to 30.43" (773mm) of precipitation.Snowfall
Months with snowfall in South Williamson are January through May, October through December. In South Williamson, in December, during 6 snowfall days, 3.9" (99mm) of snow is typically accumulated. In South Williamson, Kentucky, during the entire year, snow falls for 32.9 days and aggregates up to 16.81" (427mm) of snow.Daylight
The month with the shortest days in South Williamson is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 7:26 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:20 pm EST.
Sunshine
In December, the average sunshine in South Williamson is 4.5h.UV index
The months with the lowest UV index in South Williamson are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. It's recommended to limit sun exposure when its radiation is at its peak during midday. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Frequently asked questions
What is the usual temperature for South Williamson in December?
What is the average humidity in December in South Williamson?
How many days does it rain in December in South Williamson?
How much does it snow in South Williamson in December?
What is the month with the shortest days in South Williamson?
How many hours of daylight does South Williamson have in December?
When are sunrise and sunset in December in South Williamson?
How many hours of sunshine does South Williamson have in December?
What is the month with the lowest UV index in South Williamson?
How high is the UV index in December in South Williamson?
Average temperature in December
South Williamson, KY
- Average high temperature in December: 45.1°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in December: 33.1°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in December
South Williamson, KY
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
South Williamson, KY
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in December
South Williamson, KY
- Average humidity in December: 80%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are July, August and November (75%).
Average rainfall in December
South Williamson, KY
- Average rainfall in December: 2.91"
The wettest months (with the highest rainfall) are February and May (3.27").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in December
South Williamson, KY
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in December
South Williamson, KY
- Average snowfall in December: 3.9"
The month with the highest snowfall is February (4.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
South Williamson, KY
- Average snowfall days in December: 6 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
South Williamson, 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
South Williamson, KY
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in December
South Williamson, KY
- Average UV index in December: 2
The months with the highest UV index are June 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
South Williamson, KY
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
South Williamson, KY
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
South Williamson, Kentucky, USA
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