December weather forecastSimpsons, TN
December
Weather in December
December, the first month of the winter in Simpsons, is also a frosty month, with an average temperature varying between 48.6°F (9.2°C) and 34.7°F (1.5°C).Temperature
The beginning of December brings a slight decrease in the average high-temperature, transitioning from a mild 56.3°F (13.5°C) in November to a chilly 48.6°F (9.2°C). During December, the nighttime temperature averages to an icy 34.7°F (1.5°C).Humidity
The most humid month in Simpsons is December, with an average relative humidity of 80%.Rainfall
In Simpsons, in December, during 12.8 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. In Simpsons, Tennessee, during the entire year, the rain falls for 168.8 days and collects up to 34.06" (865mm) of precipitation.Snowfall
Months with snowfall in Simpsons are January through April, November and December. In December, it is snowing for 4.1 days. Throughout December, 1.1" (28mm) of snow is accumulated. Throughout the year, in Simpsons, there are 19.9 snowfall days, and 4.92" (125mm) 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 Simpsons, sunrise is at 6:34 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 4:38 pm CST.
Sunshine
In Simpsons, the average sunshine in December is 4.7h.UV index
The months with the lowest UV index in Simpsons are January, February and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Simpsons, TN
- Average high temperature in December: 48.6°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (43.7°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in December
Simpsons, 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
Simpsons, TN
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is February (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in December
Simpsons, TN
- Average humidity in December: 80%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is November (75%).
Average rainfall in December
Simpsons, TN
- Average rainfall in December: 2.68"
The wettest month (with the highest rainfall) is February (3.82").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in December
Simpsons, TN
- Average rainfall days in December: 12.8 days
The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is November (9.6 days).
Average snowfall in December
Simpsons, TN
- Average snowfall in December: 1.1"
The month with the highest snowfall is February (1.69").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Simpsons, TN
- Average snowfall days in December: 4.1 days
The month with the highest number of snowfall days is January (5.9 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
Simpsons, TN
- Average daylight in December: 9h and 48min
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: 4h and 42min
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 24min).
Average sunshine days in December
Simpsons, TN
- Average sunshine days in December: 15.1 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in December
Simpsons, 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
Simpsons, TN
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Simpsons, TN
- Average visibility in December: 6mi
The months with the highest visibility are February, April, June, October, November and December (6mi).
The months with the lowest visibility are January, March, May, July, August and September (5mi).
