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 shift from November to December coincides with a small decrease in the average high-temperature, down to a frosty 49.3°F (9.6°C) from a mild 56.8°F (13.8°C). December brings with it a nighttime average temperature of 36°F (2.2°C) in Summitville.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 13.4 days. Throughout December, 3.86" (98mm) of precipitation is accumulated. Throughout the year, in Summitville, there are 183 rainfall days, and 43.19" (1097mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Summitville, in December, during 3.1 snowfall days, 1.02" (26mm) of snow is typically accumulated. In Summitville, during the entire year, snow falls for 17.2 days and aggregates up to 4.53" (115mm) of snow.Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year in Summitville.On the first day of December, sunrise is at 6:35 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 4:41 pm CST.
Sunshine
The average sunshine in December is 4.7h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Summitville. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The UV index of 2 in December translates into these instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
What is the temperature in December in Summitville?
What is the most humid month in Summitville?
What is the average humidity in December in Summitville?
How many days does it rain in December in Summitville?
How many days does it snow in December in Summitville?
What is the month with the shortest days in Summitville?
What is the average length of the day in December in Summitville?
What time are sunrise and sunset in December in Summitville?
How long on average sun shines in December in Summitville?
When is the lowest UV index in Summitville?
How high is the UV index in December in Summitville?
Average temperature in December
Summitville, TN
- Average high temperature in December: 49.3°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in December: 36°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).
Average pressure in December
Summitville, 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
Summitville, TN
- Average wind speed in December: 7.4mph
The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).
Average humidity in December
Summitville, TN
- Average humidity in December: 80%
The months with the highest relative humidity are March and December (80%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in December
Summitville, TN
- Average rainfall in December: 3.86"
The wettest month (with the highest rainfall) is July (4.72").
The driest month (with the least rainfall) is September (2.28").
Average rainfall days in December
Summitville, TN
- Average rainfall days in December: 13.4 days
The month with the highest number of rainy days is July (21 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in December
Summitville, TN
- Average snowfall in December: 1.02"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Summitville, TN
- Average snowfall days in December: 3.1 days
The month with the highest number of snowfall days is January (5.2 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
Summitville, 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
Summitville, TN
- Average sunshine days in December: 14.9 days
The month with the most sunshine days is October (17.8 days).
The month with the least sunshine days is July (8.1 days).
Average UV index in December
Summitville, 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
Summitville, TN
- Average cloud cover in December: 52
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in December
Summitville, TN
- Average visibility in December: 5mi
The months with the highest visibility are February, March, April, June, September, October and November (6mi).
The months with the lowest visibility are January, May, July, August and December (5mi).
Summitville, Tennessee, USA
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