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 minor shift in the average high-temperature, adjusting from a cool 54.5°F (12.5°C) in November to a chilly 46.9°F (8.3°C). During the month of December, an average temperature of 32.5°F (0.3°C) is noted during the nights.Humidity
February and December, with an average relative humidity of 79%, are the most humid months.Rainfall
In Jonesborough, in December, it is raining for 12.7 days, with typically 3.07" (78mm) of accumulated precipitation. Throughout the year, there are 175.9 rainfall days, and 31.93" (811mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. The month with the most snowfall is December, when snow falls for 5.9 days and typically aggregates up to 3.74" (95mm) of snow.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year in Jonesborough.On the first day of December, sunrise is at 7:23 am and sunset at 5:15 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:25 pm EST.
Sunshine
The average sunshine in December is 5.4h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: In December, a daily UV index of 2 turns into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Jonesborough in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
What is the snowiest month?
How much does it snow in Jonesborough in December?
What is the month with the shortest days?
What is the average length of the day in December in Jonesborough?
What time are sunrise and sunset in December?
How many hours of sunshine does Jonesborough have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Jonesborough, TN
- Average high temperature in December: 46.9°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (41.7°F).
- Average low temperature in December: 32.5°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in December
Jonesborough, TN
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in December
Jonesborough, TN
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in December
Jonesborough, TN
- Average humidity in December: 79%
The months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is November (75%).
Average rainfall in December
Jonesborough, TN
- Average rainfall in December: 3.07"
The wettest month (with the highest rainfall) is February (3.39").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in December
Jonesborough, TN
- Average rainfall days in December: 12.7 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in December
Jonesborough, TN
- Average snowfall in December: 3.74"
The month with the highest snowfall is December (3.74").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Jonesborough, TN
- Average snowfall days in December: 5.9 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Jonesborough, 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: 5h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in December
Jonesborough, TN
- Average sunshine days in December: 13.7 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in December
Jonesborough, TN
- Average UV index in December: 2
The months with the highest UV index are 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
Jonesborough, TN
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Jonesborough, TN
- Average visibility in December: 5mi
The months with the highest visibility are April, June, July, August, October and November (6mi).
The months with the lowest visibility are January, February, March, May, September and December (5mi).
Jonesborough, Tennessee, USA
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