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 arrival of December corresponds with a minor reduction in the average high-temperature, down from November's cool 54.5°F (12.5°C) to a frosty 46°F (7.8°C). In Summersville, the average temperature during the nights of December drops to a cold 33.8°F (1°C).Humidity
The months with the highest humidity in Summersville are February and December, with an average relative humidity of 80%.Rainfall
In Summersville, in December, during 12.8 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. Throughout the year, in Summersville, there are 172.3 rainfall days, and 36.93" (938mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Summersville, during December, snow falls for 4.9 days and regularly aggregates up to 1.02" (26mm) of snow. In Summersville, during the entire year, snow falls for 25.1 days and aggregates up to 7.6" (193mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 6:38 am and sunset at 4:24 pm. On the last day of December, in Summersville, sunrise is at 6:56 am and sunset at 4:34 pm CST.
Sunshine
The average sunshine in December is 4.4h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Summersville. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 2 in December leads to these guidelines:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Summersville have in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Summersville, KY
- Average high temperature in December: 46°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (41°F).
- Average low temperature in December: 33.8°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).
Average pressure in December
Summersville, KY
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Summersville, KY
- Average wind speed in December: 7.6mph
The windiest months (with the highest average wind speed) are January and February (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Summersville, KY
- Average humidity in December: 80%
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Summersville, KY
- Average rainfall in December: 2.95"
The wettest month (with the highest rainfall) is July (3.82").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in December
Summersville, KY
- Average rainfall days in December: 12.8 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in December
Summersville, KY
- Average snowfall in December: 1.02"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Summersville, KY
- Average snowfall days in December: 4.9 days
The month with the highest number of snowfall days is January (7.4 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
Summersville, KY
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Summersville, KY
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is October (17 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in December
Summersville, KY
- 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
Summersville, KY
- Average cloud cover in December: 54
The months with the most cloud cover are January and February (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Summersville, KY
- Average visibility in December: 6mi
The months with the highest visibility are March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, May and July (5mi).
Summersville, Kentucky, USA
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