Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December is characterized by a slight reduction in average high-temperature, easing from a moderate 56.3°F (13.5°C) in November to a frosty 48.6°F (9.2°C). The average low-temperature of 34.7°F (1.5°C) is witnessed during December.Humidity
December is the most humid month in Harriman, with an average relative humidity of 80%.Rainfall
In Harriman, during December, the rain falls for 13.4 days and regularly aggregates up to 2.87" (73mm) of precipitation. Throughout the year, there are 169.5 rainfall days, and 34.09" (866mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In December, in Harriman, it is snowing for 2.8 days. Throughout December, 0.47" (12mm) of snow is accumulated. In Harriman, during the entire year, snow falls for 15.2 days and aggregates up to 2.76" (70mm) of snow.Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year in Harriman.On the first day of the month, sunrise is at 7:30 am and sunset at 5:24 pm. On the last day of December, in Harriman, Tennessee, sunrise is at 7:48 am and sunset at 5:34 pm EST.
Sunshine
January and December, with an average of 4.8h of sunshine, are months with the least sunshine.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 estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A maximum UV index of 2 in December translates into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
What is the average December temperature in Harriman?
What is the most humid month in Harriman?
What is the average humidity in December in Harriman?
How many days does it rain in December in Harriman?
How much does it snow in Harriman in December?
What is the month with the shortest days in Harriman?
What is the average length of the day in December in Harriman?
When are sunrise and sunset in December in Harriman?
What is the month with the least sunshine in Harriman?
How long on average sun shines in December in Harriman?
When is the lowest UV index in Harriman?
What is the UV index intensity in December in Harriman?
Average temperature in December
Harriman, TN
- Average high temperature in December: 48.6°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (44.1°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in December
Harriman, TN
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
Harriman, TN
- Average wind speed in December: 5.5mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in December
Harriman, TN
- Average humidity in December: 80%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are June, August, October and November (76%).
Average rainfall in December
Harriman, TN
- Average rainfall in December: 2.87"
The wettest month (with the highest rainfall) is July (4.09").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in December
Harriman, TN
- Average rainfall days in December: 13.4 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in December
Harriman, TN
- Average snowfall in December: 0.47"
The month with the highest snowfall is February (1.06").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Harriman, TN
- Average snowfall days in December: 2.8 days
The month with the highest number of snowfall days is January (4.8 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
Harriman, TN
- Average daylight in December: 9h and 5min
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 5min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are January and December (Average sunshine: 4h and 48min).
Average sunshine days in December
Harriman, TN
- Average sunshine days in December: 15.9 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in December
Harriman, 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
Harriman, TN
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in December
Harriman, TN
- Average visibility in December: 5mi
The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).
Harriman, Tennessee, USA
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