December weather forecastNew Johnsonville, TN
December
Weather in December
The first month of the winter, December, is also a frosty month in New Johnsonville, Tennessee, with an average temperature ranging between min 36°F (2.2°C) and max 48.7°F (9.3°C).Temperature
New Johnsonville's weather subtly changes with the onset of December, barely falling from a mild 57.2°F (14°C) in November to a chilly 48.7°F (9.3°C). Throughout the month of December, New Johnsonville witnesses an average temperature of 36°F (2.2°C).Humidity
The months with the highest humidity in New Johnsonville are March and December, with an average relative humidity of 79%.Rainfall
In New Johnsonville, in December, during 8.2 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. In New Johnsonville, during the entire year, the rain falls for 115.4 days and collects up to 12.32" (313mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In New Johnsonville, Tennessee, during December, snow falls for 1.2 days and regularly aggregates up to 0.2" (5mm) of snow. In New Johnsonville, during the entire year, snow falls for 6.2 days and aggregates up to 0.94" (24mm) of snow.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 6:44 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 4:48 pm CST.
Sunshine
The average sunshine in December is 4.6h.UV index
With an average maximum UV index of 2, December is the month with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. To protect against the Sun's most potent rays, avoid direct exposure around midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
New Johnsonville, TN
- Average high temperature in December: 48.7°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (45°F).
- Average low temperature in December: 36°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).
Average pressure in December
New Johnsonville, 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
New Johnsonville, TN
- Average wind speed in December: 7.6mph
The windiest months (with the highest average wind speed) are January, February and April (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in December
New Johnsonville, TN
- Average humidity in December: 79%
The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
New Johnsonville, TN
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is July (1.5").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in December
New Johnsonville, TN
- Average rainfall days in December: 8.2 days
The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is November (6.1 days).
Average snowfall in December
New Johnsonville, TN
- Average snowfall in December: 0.2"
The month with the highest snowfall is March (0.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
New Johnsonville, TN
- Average snowfall days in December: 1.2 days
The month with the highest number of snowfall days is January (1.9 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
New Johnsonville, TN
- Average daylight in December: 9h and 48min
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 48min).
- Average sunshine in December: 4h and 36min
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 30min).
Average sunshine days in December
New Johnsonville, TN
- Average sunshine days in December: 20.4 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is July (15.7 days).
Average UV index in December
New Johnsonville, TN
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
New Johnsonville, TN
- Average cloud cover in December: 52
The months with the most cloud cover are February and December (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
New Johnsonville, 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).
