December weather forecastSwamp Branch, KY
December
Weather in December
The first month of the winter, December, is also a frosty month in Swamp Branch, Kentucky, with an average temperature fluctuating between 45.3°F (7.4°C) and 33.1°F (0.6°C).Temperature
Swamp Branch's weather in December involves a mild decrease in the average high-temperature, moving down slightly from November's cool 54°F (12.2°C) to a frosty 45.3°F (7.4°C). During December, Swamp Branch's temperature falls to a steady low-temperature average of 33.1°F (0.6°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 80%.Rainfall
In Swamp Branch, in December, during 13.3 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, there are 173.4 rainfall days, and 30.24" (768mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Swamp Branch, in December, during 6.6 snowfall days, 2.8" (71mm) of snow is typically accumulated. Throughout the year, in Swamp Branch, there are 35.6 snowfall days, and 13.82" (351mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 7:28 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:23 pm EST.
Sunshine
In December, the average sunshine is 4.5h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Swamp Branch, 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
Swamp Branch, 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
Swamp Branch, 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
Swamp Branch, 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
Swamp Branch, 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
Swamp Branch, 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
Swamp Branch, 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
Swamp Branch, 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
Swamp Branch, KY
- Average daylight in December: 9h and 36min
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 30min
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
Swamp Branch, 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
Swamp Branch, 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
Swamp Branch, 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
Swamp Branch, 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).
