Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The shift from November to December includes a small decrease in the average high-temperature, from a mild 57°F (13.9°C) to a chilly 49.1°F (9.5°C). During December, an average low-temperature of 35.2°F (1.8°C) is observed in Holly Heights.Humidity
The most humid month in Holly Heights, Tennessee, is December, with an average relative humidity of 81%.Rainfall
The month with the most rainfall is December, when the rain falls for 12.3 days and typically aggregates up to 3.15" (80mm) of precipitation.Snowfall
Months with snowfall in Holly Heights, Tennessee, are January through April, November and December. In December, it is snowing for 1.2 days. Throughout December, 0.35" (9mm) of snow is accumulated. In Holly Heights, during the entire year, snow falls for 9.6 days and aggregates up to 1.61" (41mm) of snow.Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year in Holly Heights.On the first day of the month, sunrise is at 7:31 am and sunset at 5:28 pm. On the last day of December, in Holly Heights, sunrise is at 7:49 am and sunset at 5:38 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 4.9h of sunshine.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 minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 2 during December leads to these instructions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Holly Heights?
What is the most humid month in Holly Heights?
What is the average humidity in December in Holly Heights?
What is the wettest month in Holly Heights?
How much does it rain in Holly Heights in December?
How many days does it snow in December in Holly Heights?
What is the month with the shortest days in Holly Heights?
What is the average length of the day in December in Holly Heights?
What time are sunrise and sunset in December in Holly Heights?
What is the month with the least sunshine in Holly Heights?
How long on average sun shines in December in Holly Heights?
What is the month with the lowest UV index in Holly Heights?
What is the UV index intensity in December in Holly Heights?
Average temperature in December
Holly Heights, TN
- Average high temperature in December: 49.1°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (45°F).
- Average low temperature in December: 35.2°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 (30.4°F).
Average pressure in December
Holly Heights, TN
- Average pressure in December: 30.15"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
Holly Heights, TN
- Average wind speed in December: 5.9mph
The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest months (with the lowest average wind speed) are July and August (3.9mph).
Average humidity in December
Holly Heights, TN
- Average humidity in December: 81%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are January, June, July, August, September, October and November (76%).
Average rainfall in December
Holly Heights, TN
- Average rainfall in December: 3.15"
The wettest month (with the highest rainfall) is December (3.15").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in December
Holly Heights, TN
- Average rainfall days in December: 12.3 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in December
Holly Heights, TN
- Average snowfall in December: 0.35"
The month with the highest snowfall is January (0.51").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Holly Heights, TN
- Average snowfall days in December: 1.2 days
The month with the highest number of snowfall days is January (3.4 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
Holly Heights, TN
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in December
Holly Heights, TN
- Average sunshine days in December: 17.1 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in December
Holly Heights, 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
Holly Heights, TN
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in December
Holly Heights, TN
- Average visibility in December: 5mi
The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).
Holly Heights, Tennessee, USA
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