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
December brings a slight decrease in temperature, down from a moderate 56.3°F (13.5°C) in November to a chilly 47.5°F (8.6°C). An average low-temperature of 34.7°F (1.5°C) marks the nights throughout December.Humidity
The months with the highest humidity are February, March, May, July and December, with an average relative humidity of 79%.Rainfall
In Hartsville Junction, in December, it is raining for 12.8 days, with typically 2.99" (76mm) of accumulated precipitation. In Hartsville Junction, Tennessee, during the entire year, the rain falls for 176.5 days and collects up to 41.22" (1047mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Hartsville Junction, in December, snow falls for 3.5 days, with typically accumulated 0.87" (22mm) of snow. Throughout the year, there are 17.5 snowfall days, and 5" (127mm) of snow is accumulated.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year in Hartsville Junction.On the first day of December, sunrise is at 6:39 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 4:40 pm CST.
Sunshine
The average sunshine in December is 4.4h.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 reading of 2, and below, represents a low threat to health 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:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Hartsville Junction in December?
What are the most humid months?
What is the average humidity in December?
How much does it rain in Hartsville Junction in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index in Hartsville Junction?
What is the UV index reading in December?
Average temperature in December
Hartsville Junction, TN
- Average high temperature in December: 47.5°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (42.8°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (28.9°F).
Average pressure in December
Hartsville Junction, 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
Hartsville Junction, TN
- Average wind speed in December: 7.4mph
The windiest month (with the highest average wind speed) is February (8.2mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).
Average humidity in December
Hartsville Junction, TN
- Average humidity in December: 79%
The months with the highest relative humidity are February, March, May, July and December (79%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Hartsville Junction, TN
- Average rainfall in December: 2.99"
The wettest month (with the highest rainfall) is July (5.2").
The driest month (with the least rainfall) is November (2.28").
Average rainfall days in December
Hartsville Junction, TN
- Average rainfall days in December: 12.8 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in December
Hartsville Junction, TN
- Average snowfall in December: 0.87"
The month with the highest snowfall is February (1.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Hartsville Junction, TN
- Average snowfall days in December: 3.5 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
Hartsville Junction, 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 2min
The months with the most sunshine are June and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Hartsville Junction, TN
- Average sunshine days in December: 14.9 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in December
Hartsville Junction, 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
Hartsville Junction, TN
- Average cloud cover in December: 54
The month with the most cloud cover is February (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in December
Hartsville Junction, TN
- Average visibility in December: 6mi
The months with the highest visibility are February, April, June, September, October, November and December (6mi).
The months with the lowest visibility are January, March, May, July and August (5mi).
Hartsville Junction, Tennessee, USA
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