December weather forecastMason, TN
December
Weather in December
December, the first month of the winter in Mason, is also a frosty month, with an average temperature ranging between min 37.2°F (2.9°C) and max 49.8°F (9.9°C).Temperature
With the arrival of December, Mason experiences a modest decline in average high-temperatures, transitioning from a refreshing 58.3°F (14.6°C) in November to a frosty 49.8°F (9.9°C). Throughout the month of December, Mason witnesses an average low-temperature of 37.2°F (2.9°C).Humidity
In December, the average relative humidity is 77%.Rainfall
In Mason, in December, during 8.5 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. In Mason, during the entire year, the rain falls for 130.1 days and collects up to 16.5" (419mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Mason, during December, snow falls for 0.4 days and regularly aggregates up to 0.2" (5mm) of snow. In Mason, during the entire year, snow falls for 3.9 days and aggregates up to 1.02" (26mm) of snow.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 6:49 am and sunset at 4:45 pm. On the last day of December, sunrise is at 7:07 am and sunset at 4:55 pm CST.
Sunshine
In December, the average sunshine is 5h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, a daily UV index of 2 turns into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Around midday, solar radiation is most harmful; hence, exposure should be limited. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mason, TN
- Average high temperature in December: 49.8°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (45.9°F).
- Average low temperature in December: 37.2°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).
Average pressure in December
Mason, 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 (29.94"Hg).
Average wind speed in December
Mason, TN
- Average wind speed in December: 8.7mph
The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in December
Mason, TN
- Average humidity in December: 77%
The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall in December
Mason, TN
- Average rainfall in December: 1.54"
The wettest month (with the highest rainfall) is July (1.85").
The driest month (with the least rainfall) is September (0.79").
Average rainfall days in December
Mason, TN
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in December
Mason, TN
- Average snowfall in December: 0.2"
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
Mason, TN
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is February (1.5 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
Mason, TN
- Average daylight in December: 9h and 48min
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: 5h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Mason, TN
- Average sunshine days in December: 21.1 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is August (13.7 days).
Average UV index in December
Mason, TN
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Mason, TN
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in December
Mason, TN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
