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's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a mild 57.2°F (14°C) in November to a chilly 49.6°F (9.8°C). The average nighttime temperature lowers to a wintry 36.1°F (2.3°C) throughout December.Humidity
The most humid month is December, with an average relative humidity of 81%.Rainfall
In Cowan, during December, the rain falls for 12.5 days and regularly aggregates up to 3.78" (96mm) of precipitation. In Cowan, during the entire year, the rain falls for 173.5 days and collects up to 39.25" (997mm) of precipitation.Snowfall
Months with snowfall in Cowan are January through March, November and December. In Cowan, in December, during 1.1 snowfall days, 0.43" (11mm) of snow is typically accumulated. Throughout the year, in Cowan, there are 7.3 snowfall days, and 1.89" (48mm) 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 December in Cowan, sunrise is at 6:34 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 4:42 pm CST.
Sunshine
In December, the average sunshine in Cowan is 4.9h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Cowan. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 2 during December leads to these instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Around midday, solar radiation is most harmful; hence, exposure should be limited. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Cowan?
What is the most humid month in Cowan?
What is the average humidity in December in Cowan?
How much does it rain in Cowan in December?
How much does it snow in Cowan in December?
What is the month with the shortest days in Cowan?
How many hours of daylight does Cowan have in December?
When are sunrise and sunset in December in Cowan?
How many hours of sunshine does Cowan have in December?
What is the month with the lowest UV index in Cowan?
How high is the UV index in December in Cowan?
Average temperature in December
Cowan, TN
- Average high temperature in December: 49.6°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 (45.3°F).
- Average low temperature in December: 36.1°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 (31.3°F).
Average pressure in December
Cowan, 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
Cowan, TN
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is February (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in December
Cowan, TN
- Average humidity in December: 81%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in December
Cowan, TN
- Average rainfall in December: 3.78"
The wettest month (with the highest rainfall) is February (4.17").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in December
Cowan, TN
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is July (20.7 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in December
Cowan, TN
- Average snowfall in December: 0.43"
The month with the highest snowfall is January (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Cowan, TN
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is January (2.2 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
Cowan, 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 5min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Cowan, TN
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (8.8 days).
Average UV index in December
Cowan, 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
Cowan, TN
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in December
Cowan, TN
- Average visibility in December: 6mi
The months with the highest visibility are February, April, June, September, October, November and December (6mi).
The months with the lowest visibility are January, March, May, July and August (5mi).
Cowan, Tennessee, USA
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