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
In Swift, the average high-temperature in December gently drops from a mild 58.6°F (14.8°C) in November to a cool 50.4°F (10.2°C). During the month of December, Swift's nighttime temperature lowers to an average of 37.4°F (3°C).Humidity
The months with the highest humidity are March and December, with an average relative humidity of 80%.Rainfall
In December, the rain falls for 13.2 days. Throughout December, 2.99" (76mm) of precipitation is accumulated. Throughout the year, there are 166.9 rainfall days, and 37.32" (948mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Swift, Tennessee, in December, during 0.6 snowfall days, 0.04" (1mm) of snow is typically accumulated. Throughout the year, there are 5.8 snowfall days, and 1.5" (38mm) 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, sunrise is at 6:43 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 4:50 pm CST.
Sunshine
In Swift, the average sunshine in December is 4.7h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What are the most humid months?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December in Swift?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Swift, TN
- Average high temperature in December: 50.4°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (46.9°F).
- Average low temperature in December: 37.4°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).
Average pressure in December
Swift, TN
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Swift, TN
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is February (8mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).
Average humidity in December
Swift, TN
- Average humidity in December: 80%
The months with the highest relative humidity are March and December (80%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Swift, TN
- Average rainfall in December: 2.99"
The wettest month (with the highest rainfall) is February (4.41").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in December
Swift, TN
- Average rainfall days in December: 13.2 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (9.8 days).
Average snowfall in December
Swift, TN
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Swift, TN
- Average snowfall days in December: 0.6 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Swift, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Swift, TN
- Average sunshine days in December: 16.4 days
The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in December
Swift, TN
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Swift, TN
- Average cloud cover in December: 50
The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in December
Swift, TN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are May and July (5mi).
Swift, Tennessee, USA
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