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 onset of December brings a small shift in high-temperatures, falling from a moderate 55.9°F (13.3°C) in November to a frosty 48.2°F (9°C). In Altamont, the December nights cool down to an average low of 34.7°F (1.5°C).Humidity
With an average relative humidity of 82%, December is the most humid month.Rainfall
In Altamont, in December, during 13.5 rainfall days, 4.21" (107mm) of precipitation is typically accumulated. In Altamont, Tennessee, during the entire year, the rain falls for 182.8 days and collects up to 45.91" (1166mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Altamont, Tennessee, in December, during 2.8 snowfall days, 1.46" (37mm) of snow is typically accumulated. Throughout the year, there are 16.6 snowfall days, and 6.5" (165mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 6:34 am and sunset at 4:30 pm. On the last day of December, sunrise is at 6:51 am and sunset at 4:40 pm CST.
Sunshine
In December, the average sunshine is 4.7h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Altamont. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 2 during December leads to these instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in Altamont in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index in Altamont?
What is the UV index intensity in December?
Average temperature in December
Altamont, TN
- Average high temperature in December: 48.2°F
The warmest month (with the highest average high temperature) is July (85.5°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 (65.8°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in December
Altamont, TN
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
Altamont, TN
- Average wind speed in December: 6.4mph
The windiest month (with the highest average wind speed) is February (7.1mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in December
Altamont, TN
- Average humidity in December: 82%
The month with the highest relative humidity is December (82%).
The months with the lowest relative humidity are October and November (77%).
Average rainfall in December
Altamont, TN
- Average rainfall in December: 4.21"
The wettest month (with the highest rainfall) is July (4.92").
The driest month (with the least rainfall) is November (2.8").
Average rainfall days in December
Altamont, TN
- Average rainfall days in December: 13.5 days
The month with the highest number of rainy days is July (21.4 days).
The month with the least rainy days is November (10 days).
Average snowfall in December
Altamont, TN
- Average snowfall in December: 1.46"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Altamont, TN
- Average snowfall days in December: 2.8 days
The month with the highest number of snowfall days is February (5.1 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
Altamont, TN
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in December
Altamont, TN
- Average sunshine days in December: 15.3 days
The month with the most sunshine days is October (18 days).
The month with the least sunshine days is July (7.1 days).
Average UV index in December
Altamont, 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 and December (UV index 2).
Average cloud cover in December
Altamont, TN
- Average cloud cover in December: 53
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 34).
Average visibility in December
Altamont, TN
- Average visibility in December: 5mi
The month with the highest visibility is November (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October and December (5mi).
Altamont, Tennessee, USA
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