December weather forecastThornton, KY
December
Weather in December
The first month of the winter, December, is also a frosty month in Thornton, Kentucky, with temperature in the range of an average high of 45.1°F (7.3°C) and an average low of 32.4°F (0.2°C).Temperature
December signals a slight drop in average high-temperature, sliding from November's fresh 53.2°F (11.8°C) to a chilly 45.1°F (7.3°C). December nights cool down to an average low-temperature of 32.4°F (0.2°C).Humidity
In December, the average relative humidity is 80%.Rainfall
In Thornton, in December, it is raining for 13 days, with typically 3.62" (92mm) of accumulated precipitation. Throughout the year, in Thornton, there are 195.8 rainfall days, and 40.35" (1025mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Thornton, during December, snow falls for 7.8 days and regularly aggregates up to 4.09" (104mm) of snow. In Thornton, during the entire year, snow falls for 38.6 days and aggregates up to 19.29" (490mm) of snow.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:26 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:24 pm EST.
Sunshine
In December, the average sunshine is 4.7h.UV index
The months with the lowest UV index in Thornton are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: An average UV index of 2 in December transforms into this advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Thornton, KY
- Average high temperature in December: 45.1°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in December: 32.4°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in December
Thornton, 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 (29.99"Hg).
Average wind speed in December
Thornton, KY
- Average wind speed in December: 6mph
The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in December
Thornton, KY
- Average humidity in December: 80%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is November (76%).
Average rainfall in December
Thornton, KY
- Average rainfall in December: 3.62"
The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is September (2.48").
Average rainfall days in December
Thornton, KY
- Average rainfall days in December: 13 days
The months with the highest number of rainy days are May and July (20.8 days).
The month with the least rainy days is February (12.6 days).
Average snowfall in December
Thornton, KY
- Average snowfall in December: 4.09"
The month with the highest snowfall is January (5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Thornton, KY
- Average snowfall days in December: 7.8 days
The month with the highest number of snowfall days is January (11.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Thornton, KY
- Average daylight in December: 9h and 42min
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 42min).
- Average sunshine in December: 4h and 42min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Thornton, KY
- Average sunshine days in December: 11.9 days
The month with the most sunshine days is November (15.1 days).
The month with the least sunshine days is May (8 days).
Average UV index in December
Thornton, KY
- Average UV index in December: 2
The months with the highest UV index are May, June and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Thornton, KY
- Average cloud cover in December: 55
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Thornton, 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).
