December weather forecastGreenfield, TN
December
Weather in December
December, the first month of the winter in Greenfield, is also a frosty month, with an average temperature ranging between min 35.6°F (2°C) and max 48°F (8.9°C).Temperature
In December, the average high-temperature marginally decreases from a moderate 56.8°F (13.8°C) in November to a frosty 48°F (8.9°C). Nighttime temperature in Greenfield experiences an average drop to a wintry 35.6°F (2°C) in December.Humidity
The average relative humidity in December is 78%.Rainfall
In Greenfield, in December, it is raining for 12.4 days, with typically 3.39" (86mm) of accumulated precipitation. Throughout the year, in Greenfield, Tennessee, there are 163.8 rainfall days, and 38.5" (978mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Greenfield, in December, snow falls for 1 days, with typically accumulated 0.55" (14mm) of snow. Throughout the year, in Greenfield, there are 8.7 snowfall days, and 4.13" (105mm) of snow is accumulated.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:48 am and sunset at 4:40 pm. On the last day of December, in Greenfield, sunrise is at 7:06 am and sunset at 4:51 pm CST.
Sunshine
The average sunshine in December in Greenfield is 4.9h.UV index
The months with the lowest UV index in Greenfield are February and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. To avoid the Sun's strongest rays, limit exposure around the mid-day period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Greenfield, TN
- Average high temperature in December: 48°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (43.9°F).
- Average low temperature in December: 35.6°F
The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in December
Greenfield, 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 (29.95"Hg).
Average wind speed in December
Greenfield, TN
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is February (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.4mph).
Average humidity in December
Greenfield, TN
- Average humidity in December: 78%
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Greenfield, TN
- Average rainfall in December: 3.39"
The wettest month (with the highest rainfall) is February (4.25").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in December
Greenfield, TN
- Average rainfall days in December: 12.4 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is October (10.2 days).
Average snowfall in December
Greenfield, TN
- Average snowfall in December: 0.55"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Greenfield, TN
- Average snowfall days in December: 1 days
The month with the highest number of snowfall days is January (3.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Greenfield, 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 54min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Greenfield, TN
- Average sunshine days in December: 17 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in December
Greenfield, TN
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are February and December (UV index 2).
Average cloud cover in December
Greenfield, TN
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in December
Greenfield, 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).
