December weather forecastRadnor, TN
December
Weather in December
The first month of the winter, December, is still a chilly month in Radnor, Tennessee, with an average temperature ranging between min 35.6°F (2°C) and max 48.9°F (9.4°C).Temperature
December marks a gentle change in average high-temperature, declining from November's refreshing 57.4°F (14.1°C) to a chilly 48.9°F (9.4°C). Throughout December, the temperature tends to fall to a consistent average low of 35.6°F (2°C).Humidity
With an average relative humidity of 78%, December is the most humid month.Rainfall
In Radnor, in December, during 11.8 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. In Radnor, during the entire year, the rain falls for 169.9 days and collects up to 31.3" (795mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Radnor, in December, snow falls for 3 days, with typically accumulated 0.35" (9mm) of snow. In Radnor, during the entire year, snow falls for 14.6 days and aggregates up to 2.99" (76mm) 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 the month, sunrise is at 6:39 am and sunset at 4:32 pm. On the last day of December, sunrise is at 6:57 am and sunset at 4:42 pm CST.
Sunshine
In Radnor, the average sunshine in December is 4.7h.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 unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 2 during December leads to these instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Radnor, TN
- Average high temperature in December: 48.9°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (44.1°F).
- Average low temperature in December: 35.6°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in December
Radnor, 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 (29.97"Hg).
Average wind speed in December
Radnor, TN
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).
Average humidity in December
Radnor, TN
- Average humidity in December: 78%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Radnor, TN
- Average rainfall in December: 2.28"
The wettest month (with the highest rainfall) is July (4.02").
The driest month (with the least rainfall) is November (1.77").
Average rainfall days in December
Radnor, TN
- Average rainfall days in December: 11.8 days
The month with the highest number of rainy days is July (20.2 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in December
Radnor, TN
- Average snowfall in December: 0.35"
The month with the highest snowfall is January (0.94").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Radnor, TN
- Average snowfall days in December: 3 days
The month with the highest number of snowfall days is January (4.7 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
Radnor, 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 42min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in December
Radnor, TN
- Average sunshine days in December: 16.2 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in December
Radnor, 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
Radnor, TN
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are June and August (Cloud cover 29).
Average visibility in December
Radnor, TN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
