December weather forecastPostoak, TN
December
Weather in December
December, the first month of the winter in Postoak, is still a chilly month, with an average temperature fluctuating between 48.6°F (9.2°C) and 34.7°F (1.5°C).Temperature
A moderate decline in average high-temperatures is noted in December, moving from a refreshing 56.1°F (13.4°C) in November to a frosty 48.6°F (9.2°C). The average low-temperature, in December, is a wintry 34.7°F (1.5°C).Humidity
December is the most humid month, with an average relative humidity of 80%.Rainfall
In Postoak, in December, during 13.5 rainfall days, 3.62" (92mm) of precipitation is typically accumulated. Throughout the year, there are 176.6 rainfall days, and 39.41" (1001mm) of precipitation is accumulated.Snowfall
Months with snowfall in Postoak are January through April, November and December. In Postoak, during December, snow falls for 2.2 days and regularly aggregates up to 0.63" (16mm) of snow. Throughout the year, there are 11.6 snowfall days, and 3.15" (80mm) of snow is accumulated.Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year in Postoak.On the first day of December in Postoak, sunrise is at 7:30 am and sunset at 5:24 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 5:35 pm EST.
Sunshine
January and December, with an average of 4.9h of sunshine, are months with the least sunshine.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 value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 2 during December translates into these guidelines:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Postoak, TN
- Average high temperature in December: 48.6°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 (43.7°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in December
Postoak, TN
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
Postoak, TN
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in December
Postoak, TN
- Average humidity in December: 80%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is November (76%).
Average rainfall in December
Postoak, TN
- Average rainfall in December: 3.62"
The wettest month (with the highest rainfall) is July (4.29").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in December
Postoak, TN
- Average rainfall days in December: 13.5 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is November (10.7 days).
Average snowfall in December
Postoak, TN
- Average snowfall in December: 0.63"
The month with the highest snowfall is February (1.18").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Postoak, TN
- Average snowfall days in December: 2.2 days
The months with the highest number of snowfall days are January and February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Postoak, 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 54min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 4h and 54min).
Average sunshine days in December
Postoak, TN
- Average sunshine days in December: 15.5 days
The months with the most sunshine days are October and November (18.5 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in December
Postoak, 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
Postoak, TN
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in December
Postoak, TN
- Average visibility in December: 5mi
The months with the highest visibility are April, June, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).
