December weather forecastGlencliff, TN
December
Weather in December
The first month of the winter, December, is still a chilly month in Glencliff, Tennessee, with an average temperature fluctuating between 35.6°F (2°C) and 48.9°F (9.4°C).Temperature
A subtle change in temperatures is noted as November gives way to December, with average highs reducing from a mild 57.4°F (14.1°C) to a frosty 48.9°F (9.4°C). Nighttime temperature experiences an average drop to a wintry 35.6°F (2°C) in December.Humidity
With an average relative humidity of 78%, December is the most humid month.Rainfall
In December, the rain falls for 11.8 days. Throughout December, 2.28" (58mm) of precipitation is accumulated. In Glencliff, 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 Glencliff, during December, snow falls for 3 days and regularly aggregates up to 0.35" (9mm) of snow. In Glencliff, 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 December, sunrise is at 6:39 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 4:42 pm CST.
Sunshine
In December, the average sunshine 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 health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: During December, 2 as the daily maximum UV index converts into the following advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly 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
Glencliff, 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
Glencliff, 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
Glencliff, 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
Glencliff, 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
Glencliff, 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
Glencliff, 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
Glencliff, 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
Glencliff, 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
Glencliff, 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
Glencliff, 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
Glencliff, 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
Glencliff, 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
Glencliff, 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).
