December weather forecastBig Rock, TN
December
Weather in December
December, the first month of the winter in Big Rock, is still a chilly month, with temperature in the range of an average high of 47.5°F (8.6°C) and an average low of 35.4°F (1.9°C).Temperature
December marks a gentle change in average high-temperature, declining from November's moderate 56.3°F (13.5°C) to a chilly 47.5°F (8.6°C). In December, Big Rock encounters an average low-temperature of 35.4°F (1.9°C) during the night.Humidity
March and December, with an average relative humidity of 79%, are the most humid months in Big Rock.Rainfall
In Big Rock, in December, during 12.2 rainfall days, 3.23" (82mm) of precipitation is typically accumulated. Throughout the year, in Big Rock, Tennessee, there are 166.6 rainfall days, and 36.54" (928mm) of precipitation is accumulated.Snowfall
Months with snowfall in Big Rock are January through April, October through December. In Big Rock, Tennessee, during December, snow falls for 1.9 days and regularly aggregates up to 1.06" (27mm) of snow. In Big Rock, during the entire year, snow falls for 12.1 days and aggregates up to 4.88" (124mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 6:45 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:03 am and sunset at 4:45 pm CST.
Sunshine
In Big Rock, the average sunshine in December is 4.7h.UV index
The months with the lowest UV index in Big Rock 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 exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 2 in December translates into these instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Big Rock, TN
- Average high temperature in December: 47.5°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (43.3°F).
- Average low temperature in December: 35.4°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).
Average pressure in December
Big Rock, 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
Big Rock, TN
- Average wind speed in December: 7.8mph
The windiest months (with the highest average wind speed) are January, February and April (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in December
Big Rock, TN
- Average humidity in December: 79%
The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Big Rock, TN
- Average rainfall in December: 3.23"
The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in December
Big Rock, TN
- Average rainfall days in December: 12.2 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (10.2 days).
Average snowfall in December
Big Rock, TN
- Average snowfall in December: 1.06"
The month with the highest snowfall is March (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Big Rock, TN
- Average snowfall days in December: 1.9 days
The month with the highest number of snowfall days is January (3.8 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
Big Rock, 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 42min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Big Rock, TN
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in December
Big Rock, 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
Big Rock, TN
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility in December
Big Rock, TN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are May, July and August (5mi).
