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 beginning of December subtly marks a decrease in the average high-temperature, transitioning from a refreshing 56.7°F (13.7°C) in November to a chilly 48.2°F (9°C). In Harpeth Valley, in December, the average low-temperature is a wintry 35.4°F (1.9°C).Humidity
The months with the highest humidity in Harpeth Valley are March, May and December, with an average relative humidity of 79%.Rainfall
In Harpeth Valley, during December, the rain falls for 12.8 days and regularly aggregates up to 3.07" (78mm) of precipitation. In Harpeth Valley, during the entire year, the rain falls for 173.2 days and collects up to 38.03" (966mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Harpeth Valley, in December, during 2.4 snowfall days, 0.59" (15mm) of snow is typically accumulated. In Harpeth Valley, during the entire year, snow falls for 11.4 days and aggregates up to 3.86" (98mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 6:41 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 4:44 pm CST.
Sunshine
In Harpeth Valley, Tennessee, 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. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: The UV index of 2 during December leads to these advisories:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Harpeth Valley in December?
What is the most humid month in Harpeth Valley?
What is the average humidity in December in Harpeth Valley?
How many days does it rain in December in Harpeth Valley?
How much does it snow in Harpeth Valley in December?
What is the month with the shortest days in Harpeth Valley?
How many hours of daylight does Harpeth Valley have in December?
When is the sunrise / sunset in December in Harpeth Valley?
How many hours of sunshine does Harpeth Valley have in December?
What are the months with the lowest UV index in Harpeth Valley?
What is the UV index reading in December in Harpeth Valley?
Average temperature in December
Harpeth Valley, TN
- Average high temperature in December: 48.2°F
The warmest month (with the highest average high temperature) is July (87.4°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 (68.7°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).
Average pressure in December
Harpeth Valley, TN
- Average pressure in December: 30.15"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
Harpeth Valley, TN
- Average wind speed in December: 7.7mph
The windiest month (with the highest average wind speed) is February (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Harpeth Valley, TN
- Average humidity in December: 79%
The months with the highest relative humidity are March, May and December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Harpeth Valley, TN
- Average rainfall in December: 3.07"
The wettest month (with the highest rainfall) is July (4.21").
The driest month (with the least rainfall) is September (2.28").
Average rainfall days in December
Harpeth Valley, TN
- Average rainfall days in December: 12.8 days
The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in December
Harpeth Valley, TN
- Average snowfall in December: 0.59"
The month with the highest snowfall is March (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Harpeth Valley, TN
- Average snowfall days in December: 2.4 days
The month with the highest number of snowfall days is January (3.3 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
Harpeth Valley, TN
- Average daylight in December: 9h and 4min
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 4min
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
Harpeth Valley, TN
- Average sunshine days in December: 15.9 days
The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is July (8.9 days).
Average UV index in December
Harpeth Valley, 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
Harpeth Valley, 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
Harpeth Valley, TN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are May, July and August (5mi).
Harpeth Valley, Tennessee, USA
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