December weather forecastCardiff, TN
December
Weather in December
The first month of the winter, December, is also a frosty month in Cardiff, Tennessee, with an average temperature fluctuating between 34.7°F (1.5°C) and 48.6°F (9.2°C).Temperature
With the onset of December, Cardiff's climate undergoes a slight change as the average high-temperature moves from a moderate 56.1°F (13.4°C) in November to a frosty 48.6°F (9.2°C). Cardiff cools down to an average low-temperature of 34.7°F (1.5°C) throughout the month of December.Humidity
With an average relative humidity of 80%, December is the most humid month.Rainfall
In Cardiff, during December, the rain falls for 13.5 days and regularly aggregates up to 3.62" (92mm) of precipitation. In Cardiff, Tennessee, during the entire year, the rain falls for 176.6 days and collects up to 39.41" (1001mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Cardiff, in December, during 2.2 snowfall days, 0.63" (16mm) of snow is typically accumulated. Throughout the year, there are 11.6 snowfall days, and 3.15" (80mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 7:30 am and sunset at 5:24 pm. On the last day of December, sunrise is at 7:48 am and sunset at 5:35 pm EST.
Sunshine
The months with the least sunshine are January and December, with an average of 4.9h of sunshine.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 value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Cardiff, TN
- Average high temperature in December: 48.6°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (43.7°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in December
Cardiff, TN
- 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
Cardiff, TN
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in December
Cardiff, TN
- Average humidity in December: 80%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is November (76%).
Average rainfall in December
Cardiff, TN
- Average rainfall in December: 3.62"
The wettest month (with the highest rainfall) is July (4.29").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in December
Cardiff, TN
- Average rainfall days in December: 13.5 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is November (10.7 days).
Average snowfall in December
Cardiff, TN
- Average snowfall in December: 0.63"
The month with the highest snowfall is February (1.18").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Cardiff, TN
- Average snowfall days in December: 2.2 days
The months with the highest number of snowfall days are January and February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Cardiff, 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 54min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 4h and 54min).
Average sunshine days in December
Cardiff, TN
- Average sunshine days in December: 15.5 days
The months with the most sunshine days are October and November (18.5 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in December
Cardiff, 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
Cardiff, TN
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in December
Cardiff, TN
- Average visibility in December: 5mi
The months with the highest visibility are April, June, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).
