December weather forecastJoelton, TN
December
Weather in December
The first month of the winter, December, is also a frosty month in Joelton, Tennessee, with an average temperature fluctuating between 35.4°F (1.9°C) and 48°F (8.9°C).Temperature
The transition to December results in a modest reduction in average high-temperature, moving from a moderate 56.7°F (13.7°C) in November to a chilly 48°F (8.9°C). Joelton records a consistent low-temperature of 35.4°F (1.9°C) during December nights.Humidity
The average relative humidity in December is 78%.Rainfall
In Joelton, during December, the rain falls for 13.1 days and regularly aggregates up to 3.27" (83mm) of precipitation. Throughout the year, there are 177.6 rainfall days, and 40.24" (1022mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Joelton, in December, during 1.8 snowfall days, 0.75" (19mm) of snow is typically accumulated. In Joelton, during the entire year, snow falls for 11.2 days and aggregates up to 3.86" (98mm) 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 the month, sunrise is at 6:40 am and sunset at 4:32 pm. On the last day of December, sunrise is at 6:58 am and sunset at 4:42 pm CST.
Sunshine
In Joelton, the average sunshine in December is 4.7h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Joelton, Tennessee. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be on the lookout! Nearly twofold UV radiation 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
Joelton, TN
- Average high temperature in December: 48°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (43.9°F).
- Average low temperature in December: 35.4°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (30°F).
Average pressure in December
Joelton, 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 (29.96"Hg).
Average wind speed in December
Joelton, TN
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in December
Joelton, TN
- Average humidity in December: 78%
The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Joelton, TN
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is July (4.33").
The driest months (with the least rainfall) are September and November (2.44").
Average rainfall days in December
Joelton, TN
- Average rainfall days in December: 13.1 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in December
Joelton, TN
- Average snowfall in December: 0.75"
The month with the highest snowfall is February (1.02").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Joelton, TN
- Average snowfall days in December: 1.8 days
The month with the highest number of snowfall days is February (3.6 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
Joelton, TN
- Average daylight in December: 9h and 42min
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 42min).
- Average sunshine in December: 4h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Joelton, TN
- Average sunshine days in December: 16.1 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in December
Joelton, 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
Joelton, TN
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in December
Joelton, TN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
