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
Heiskell's transition into December involves a gentle shift in temperature, receding from a mild 57.2°F (14°C) in November to a frosty 49.1°F (9.5°C). During the month of December, the temperature falls to an average of 35.1°F (1.7°C).Humidity
February and December, with an average relative humidity of 78%, are the most humid months in Heiskell.Rainfall
In Heiskell, in December, during 12.2 rainfall days, 3.07" (78mm) of precipitation is typically accumulated. In Heiskell, during the entire year, the rain falls for 148.9 days and collects up to 29.57" (751mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Heiskell. In Heiskell, in December, snow falls for 1.7 days, with typically accumulated 0.47" (12mm) of snow. Throughout the year, there are 11.5 snowfall days, and 3.94" (100mm) of snow is accumulated.Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:29 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:32 pm EST.
Sunshine
In Heiskell, Tennessee, the average sunshine in December is 5h.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 low health risk from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 2 in December translates into these instructions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Heiskell in December?
What is the most humid month in Heiskell?
What is the average humidity in December in Heiskell?
How many days does it rain in December in Heiskell?
How many days does it snow in December in Heiskell?
What is the month with the shortest days in Heiskell?
How many hours of daylight does Heiskell have in December?
When is the sunrise / sunset in December in Heiskell?
How long on average sun shines in December in Heiskell?
When is the lowest UV index in Heiskell?
What is the UV index reading in December in Heiskell?
Average temperature in December
Heiskell, TN
- Average high temperature in December: 49.1°F
The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (44.8°F).
- Average low temperature in December: 35.1°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).
Average pressure in December
Heiskell, 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
Heiskell, TN
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in December
Heiskell, TN
- Average humidity in December: 78%
The months with the highest relative humidity are February and December (78%).
The month with the lowest relative humidity is August (70%).
Average rainfall in December
Heiskell, TN
- Average rainfall in December: 3.07"
The wettest month (with the highest rainfall) is February (3.66").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in December
Heiskell, TN
- Average rainfall days in December: 12.2 days
The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is November (8.4 days).
Average snowfall in December
Heiskell, TN
- Average snowfall in December: 0.47"
The month with the highest snowfall is February (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Heiskell, TN
- Average snowfall days in December: 1.7 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, September and October (0 days).
Average daylight in December /
Average sunshine in December
Heiskell, 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: 5h and 0min
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
Heiskell, TN
- Average sunshine days in December: 17 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (12.9 days).
Average UV index in December
Heiskell, 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
Heiskell, TN
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in December
Heiskell, TN
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Heiskell, Tennessee, USA
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