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 onset of December is marked by a minor decrease in temperature, transitioning from a refreshing 56.8°F (13.8°C) in November to a frosty 49.3°F (9.6°C). Throughout December, the temperature tends to fall to a consistent average low of 36°F (2.2°C).Humidity
The months with the highest humidity are March and December, with an average relative humidity of 80%.Rainfall
In Hillsboro, during December, the rain falls for 13.4 days and regularly aggregates up to 3.86" (98mm) of precipitation. In Hillsboro, Tennessee, during the entire year, the rain falls for 183 days and collects up to 43.19" (1097mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Hillsboro, Tennessee, in December, during 3.1 snowfall days, 1.02" (26mm) of snow is typically accumulated. Throughout the year, in Hillsboro, there are 17.2 snowfall days, and 4.53" (115mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 48min of daylight.On the first day of December, sunrise is at 6:35 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 4:41 pm CST.
Sunshine
The average sunshine in December is 4.7h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 2 during December translates into the following guidance:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December in Hillsboro?
How many hours of sunshine does Hillsboro have in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Hillsboro, TN
- Average high temperature in December: 49.3°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 (45.1°F).
- Average low temperature in December: 36°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).
Average pressure in December
Hillsboro, 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 (29.98"Hg).
Average wind speed in December
Hillsboro, TN
- Average wind speed in December: 7.4mph
The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).
Average humidity in December
Hillsboro, TN
- Average humidity in December: 80%
The months with the highest relative humidity are March and December (80%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in December
Hillsboro, TN
- Average rainfall in December: 3.86"
The wettest month (with the highest rainfall) is July (4.72").
The driest month (with the least rainfall) is September (2.28").
Average rainfall days in December
Hillsboro, TN
- Average rainfall days in December: 13.4 days
The month with the highest number of rainy days is July (21 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in December
Hillsboro, TN
- Average snowfall in December: 1.02"
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
Hillsboro, TN
- Average snowfall days in December: 3.1 days
The month with the highest number of snowfall days is January (5.2 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
Hillsboro, 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 4min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in December
Hillsboro, TN
- Average sunshine days in December: 14.9 days
The month with the most sunshine days is October (17.8 days).
The month with the least sunshine days is July (8.1 days).
Average UV index in December
Hillsboro, 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 and December (UV index 2).
Average cloud cover in December
Hillsboro, 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 31).
Average visibility in December
Hillsboro, TN
- Average visibility in December: 5mi
The months with the highest visibility are February, March, April, June, September, October and November (6mi).
The months with the lowest visibility are January, May, July, August and December (5mi).
Hillsboro, Tennessee, USA
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