December weather forecastSylvandell, KY
December
Weather in December
December, the first month of the winter in Sylvandell, is also a frosty month, with an average temperature fluctuating between 43.7°F (6.5°C) and 31.1°F (-0.5°C).Temperature
The arrival of December indicates a decrease in the average high-temperature, moving from a cool 52.7°F (11.5°C) in November to a chilly 43.7°F (6.5°C). December brings Sylvandell a consistent average low-temperature of 31.1°F (-0.5°C).Humidity
February and December, with an average relative humidity of 81%, are the most humid months.Rainfall
In Sylvandell, during December, the rain falls for 11.7 days and regularly aggregates up to 1.85" (47mm) of precipitation. Throughout the year, there are 151.9 rainfall days, and 21.97" (558mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Sylvandell, Kentucky, in December, snow falls for 6.7 days, with typically accumulated 0.83" (21mm) of snow. Throughout the year, in Sylvandell, there are 30.4 snowfall days, and 6.1" (155mm) of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:35 am and sunset at 5:16 pm. On the last day of December, sunrise is at 7:53 am and sunset at 5:26 pm EST.
Sunshine
The average sunshine in December is 4.2h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 2 suggests this advice:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. 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. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sylvandell, KY
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in December: 31.1°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in December
Sylvandell, KY
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Sylvandell, KY
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in December
Sylvandell, KY
- Average humidity in December: 81%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is August (74%).
Average rainfall in December
Sylvandell, KY
- Average rainfall in December: 1.85"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in December
Sylvandell, KY
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in December
Sylvandell, KY
- Average snowfall in December: 0.83"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Sylvandell, KY
- Average snowfall days in December: 6.7 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sylvandell, KY
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 12min
The months with the most sunshine are June and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Sylvandell, KY
- Average sunshine days in December: 14 days
The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is February (11.8 days).
Average UV index in December
Sylvandell, 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, November and December (UV index 2).
Average cloud cover in December
Sylvandell, KY
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Sylvandell, KY
- Average visibility in December: 6mi
The months with the highest visibility are March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, May and July (5mi).
