December weather forecastKnollwood, TN
December
Weather in December
The first month of the winter, December, is also a fresh month in Knollwood, Tennessee, with an average temperature fluctuating between 50.2°F (10.1°C) and 36.1°F (2.3°C).Temperature
The commencement of December includes a gentle temperature shift, with the average high-temperature dropping a bit from a moderate 57.6°F (14.2°C) in November to a cool 50.2°F (10.1°C). Throughout December in Knollwood, a steady low-temperature average of 36.1°F (2.3°C) is noted.Humidity
With an average relative humidity of 80%, December is the most humid month in Knollwood, Tennessee.Rainfall
The wettest months in Knollwood, Tennessee, are February and December, with an average 1.18" (30mm) of rainfall.Snowfall
Months with snowfall in Knollwood are January through March and December. December is the first month it typically snows. Throughout December, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow. In Knollwood, during the entire year, snow falls for 2.9 days and aggregates up to 0.47" (12mm) of snow.Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year in Knollwood.On the first day of December, sunrise is at 7:31 am and sunset at 5:29 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 5:39 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 5h of sunshine.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Knollwood. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 2 in December translates into these instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Knollwood, TN
- Average high temperature in December: 50.2°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (46°F).
- Average low temperature in December: 36.1°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).
Average pressure in December
Knollwood, 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
Knollwood, TN
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is February (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in December
Knollwood, TN
- Average humidity in December: 80%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are June, October and November (75%).
Average rainfall in December
Knollwood, TN
- Average rainfall in December: 1.18"
The wettest months (with the highest rainfall) are February and December (1.18").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in December
Knollwood, TN
- Average rainfall days in December: 8.3 days
The month with the highest number of rainy days is July (11.7 days).
The month with the least rainy days is October (6.1 days).
Average snowfall in December
Knollwood, TN
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.31").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Knollwood, TN
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Knollwood, TN
- Average daylight in December: 9h and 48min
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: 5h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in December
Knollwood, TN
- Average sunshine days in December: 21.3 days
The month with the most sunshine days is October (23.6 days).
The month with the least sunshine days is July (16.8 days).
Average UV index in December
Knollwood, 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
Knollwood, TN
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Knollwood, TN
- Average visibility in December: 5mi
The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).
