December weather forecastRock Bridge, TN
December
Weather in December
December, the first month of the winter in Rock Bridge, is also a frosty month, with temperature in the range of an average high of 47.5°F (8.6°C) and an average low of 34.7°F (1.5°C).Temperature
Rock Bridge records a mild change in average high-temperature during December, easing from a moderate 56.3°F (13.5°C) in November to a chilly 47.5°F (8.6°C). Rock Bridge, during the month of December, experiences an average low-temperature of 34.7°F (1.5°C).Humidity
The months with the highest humidity are February, March, May, July and December, with an average relative humidity of 79%.Rainfall
In Rock Bridge, in December, during 12.8 rainfall days, 2.99" (76mm) of precipitation is typically accumulated. In Rock Bridge, during the entire year, the rain falls for 176.5 days and collects up to 41.22" (1047mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Rock Bridge, Tennessee. In Rock Bridge, in December, snow falls for 3.5 days, with typically accumulated 0.87" (22mm) of snow. In Rock Bridge, during the entire year, snow falls for 17.5 days and aggregates up to 5" (127mm) of snow.Daylight
December has the shortest days of the year in Rock Bridge, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 6:39 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 4:40 pm CST.
Sunshine
In Rock Bridge, the average sunshine in December is 4.4h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Rock Bridge. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In December, an average UV index of 2 transforms into the following instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rock Bridge, TN
- Average high temperature in December: 47.5°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (42.8°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (28.9°F).
Average pressure in December
Rock Bridge, TN
- Average pressure in December: 30.14"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
Rock Bridge, TN
- Average wind speed in December: 7.4mph
The windiest month (with the highest average wind speed) is February (8.2mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).
Average humidity in December
Rock Bridge, TN
- Average humidity in December: 79%
The months with the highest relative humidity are February, March, May, July and December (79%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Rock Bridge, TN
- Average rainfall in December: 2.99"
The wettest month (with the highest rainfall) is July (5.2").
The driest month (with the least rainfall) is November (2.28").
Average rainfall days in December
Rock Bridge, TN
- Average rainfall days in December: 12.8 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in December
Rock Bridge, TN
- Average snowfall in December: 0.87"
The month with the highest snowfall is February (1.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Rock Bridge, TN
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is January (5.2 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
Rock Bridge, TN
- Average daylight in December: 9h and 42min
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 42min).
- Average sunshine in December: 4h and 24min
The months with the most sunshine are June and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Rock Bridge, TN
- Average sunshine days in December: 14.9 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in December
Rock Bridge, 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
Rock Bridge, TN
- Average cloud cover in December: 54
The month with the most cloud cover is February (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in December
Rock Bridge, TN
- Average visibility in December: 6mi
The months with the highest visibility are February, April, June, September, October, November and December (6mi).
The months with the lowest visibility are January, March, May, July and August (5mi).
