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
The average high-temperature slightly decreases in December, shifting from a fresh 54.1°F (12.3°C) in November to a frosty 46.2°F (7.9°C). An average low-temperature of 32.9°F (0.5°C) marks the nights throughout December.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 81%.Rainfall
In Helenwood, in December, it is raining for 12.8 days, with typically 3.54" (90mm) of accumulated precipitation. Throughout the year, there are 174 rainfall days, and 39.69" (1008mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Helenwood, Tennessee, during December, snow falls for 6.3 days and regularly aggregates up to 2.4" (61mm) of snow. Throughout the year, in Helenwood, there are 31.5 snowfall days, and 13.11" (333mm) of snow is accumulated.Daylight
December has the shortest days of the year in Helenwood, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 7:31 am and sunset at 5:23 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 5:33 pm EST.
Sunshine
The average sunshine in December is 4.4h.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 reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the UV index of 2 transforms into the following advice:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Frequently asked questions
What is the average December temperature in Helenwood?
What is the most humid month in Helenwood?
What is the average humidity in December in Helenwood?
How many days does it rain in December in Helenwood?
How many days does it snow in December in Helenwood?
What is the month with the shortest days in Helenwood?
What is the average length of the day in December in Helenwood?
What time are sunrise and sunset in December in Helenwood?
How many hours of sunshine does Helenwood have in December?
When is the lowest UV index in Helenwood?
How high is the UV index in December in Helenwood?
Average temperature in December
Helenwood, TN
- Average high temperature in December: 46.2°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (41.9°F).
- Average low temperature in December: 32.9°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).
Average pressure in December
Helenwood, 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 (29.97"Hg).
Average wind speed in December
Helenwood, TN
- Average wind speed in December: 6mph
The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in December
Helenwood, TN
- Average humidity in December: 81%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is June (77%).
Average rainfall in December
Helenwood, TN
- Average rainfall in December: 3.54"
The wettest month (with the highest rainfall) is February (4.53").
The driest months (with the least rainfall) are September and November (2.56").
Average rainfall days in December
Helenwood, TN
- Average rainfall days in December: 12.8 days
The months with the highest number of rainy days are May and July (18.8 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in December
Helenwood, TN
- Average snowfall in December: 2.4"
The month with the highest snowfall is February (4.76").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Helenwood, TN
- Average snowfall days in December: 6.3 days
The months with the highest number of snowfall days are January and February (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Helenwood, TN
- Average daylight in December: 9h and 4min
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 2min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Helenwood, TN
- Average sunshine days in December: 13.8 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in December
Helenwood, 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
Helenwood, TN
- Average cloud cover in December: 57
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is June (Cloud cover 35).
Average visibility in December
Helenwood, TN
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Helenwood, Tennessee, USA
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