December weather forecastLancaster, TN
December
Weather in December
December, the first month of the winter in Lancaster, is still a chilly month, with an average temperature ranging between max 48.6°F (9.2°C) and min 35.2°F (1.8°C).Temperature
In December, the meteorological conditions change slightly, with the average high-temperature moving from a mild 56.7°F (13.7°C) in November to a chilly 48.6°F (9.2°C). Throughout December, the temperature falls to an average low of 35.2°F (1.8°C).Humidity
The most humid month is December, with an average relative humidity of 80%.Rainfall
In Lancaster, in December, during 13.5 rainfall days, 3.27" (83mm) of precipitation is typically accumulated. Throughout the year, there are 177.2 rainfall days, and 40.94" (1040mm) of precipitation is accumulated.Snowfall
Months with snowfall in Lancaster are January through April, November and December. In Lancaster, in December, during 2.6 snowfall days, 0.39" (10mm) of snow is typically accumulated. Throughout the year, there are 14 snowfall days, and 3.58" (91mm) of snow is accumulated.Daylight
The month with the shortest days in Lancaster is December, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 6:36 am and sunset at 4:29 pm. On the last day of December, sunrise is at 6:54 am and sunset at 4:39 pm CST.
Sunshine
In December, the average sunshine is 4.6h.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 reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: In December, the maximum UV index of 2 translates into these guidelines:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lancaster, TN
- Average high temperature in December: 48.6°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (43.7°F).
- Average low temperature in December: 35.2°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).
Average pressure in December
Lancaster, TN
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Lancaster, TN
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is February (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Lancaster, TN
- Average humidity in December: 80%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are October and November (76%).
Average rainfall in December
Lancaster, TN
- Average rainfall in December: 3.27"
The wettest months (with the highest rainfall) are February and July (4.17").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in December
Lancaster, TN
- Average rainfall days in December: 13.5 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in December
Lancaster, TN
- Average snowfall in December: 0.39"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Lancaster, TN
- Average snowfall days in December: 2.6 days
The month with the highest number of snowfall days is January (4.5 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
Lancaster, TN
- Average daylight in December: 9h and 48min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 4h and 36min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in December
Lancaster, TN
- Average sunshine days in December: 15.2 days
The months with the most sunshine days are October and November (18 days).
The month with the least sunshine days is July (10 days).
Average UV index in December
Lancaster, TN
- 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
Lancaster, TN
- Average cloud cover in December: 52
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Lancaster, TN
- Average visibility in December: 6mi
The months with the highest visibility are February, April, June, October, November and December (6mi).
The months with the lowest visibility are January, March, May, July, August and September (5mi).
