December weather forecastMill Brook, TN
December
Weather in December
December, the first month of the winter in Mill Brook, is also a frosty month, with temperature in the range of an average low of 32.5°F (0.3°C) and an average high of 46.9°F (8.3°C).Temperature
Mill Brook observes a small decrease in the average high-temperature with the arrival of December, falling from November's cool 54.5°F (12.5°C) to a chilly 46.9°F (8.3°C). The nights of December anticipate an average low-temperature of 32.5°F (0.3°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 79%.Rainfall
In Mill Brook, in December, during 12.7 rainfall days, 3.07" (78mm) of precipitation is typically accumulated. Throughout the year, in Mill Brook, there are 175.9 rainfall days, and 31.93" (811mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. The month with the most snowfall is December, when snow falls for 5.9 days and typically aggregates up to 3.74" (95mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 7:23 am and sunset at 5:15 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:26 pm EST.
Sunshine
In December, the average sunshine is 5.4h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 2 in December translates into these instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. On your guard! Snow's reflection can almost 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
Mill Brook, TN
- Average high temperature in December: 46.9°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (41.7°F).
- Average low temperature in December: 32.5°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in December
Mill Brook, TN
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in December
Mill Brook, TN
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in December
Mill Brook, TN
- Average humidity in December: 79%
The months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is November (75%).
Average rainfall in December
Mill Brook, TN
- Average rainfall in December: 3.07"
The wettest month (with the highest rainfall) is February (3.39").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in December
Mill Brook, TN
- Average rainfall days in December: 12.7 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in December
Mill Brook, TN
- Average snowfall in December: 3.74"
The month with the highest snowfall is December (3.74").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Mill Brook, TN
- Average snowfall days in December: 5.9 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mill Brook, 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: 5h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in December
Mill Brook, TN
- Average sunshine days in December: 13.7 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in December
Mill Brook, TN
- Average UV index in December: 2
The months with the highest UV index are 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
Mill Brook, TN
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Mill Brook, TN
- Average visibility in December: 5mi
The months with the highest visibility are April, June, July, August, October and November (6mi).
The months with the lowest visibility are January, February, March, May, September and December (5mi).
