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 transition into December subtly indicates a reduction in the average high-temperature, down to a chilly 47.3°F (8.5°C) from November's moderate 56.1°F (13.4°C). In the month of December, the average temperature dips to an icy 35.4°F (1.9°C) during the night.Humidity
In Roper, the average relative humidity in December is 78%.Rainfall
In Roper, in December, during 12.5 rainfall days, 3.27" (83mm) of precipitation is typically accumulated. In Roper, during the entire year, the rain falls for 163.4 days and collects up to 39.76" (1010mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Roper, in December, snow falls for 1.6 days, with typically accumulated 0.63" (16mm) of snow. Throughout the year, there are 11.5 snowfall days, and 5.43" (138mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 6:49 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:07 am and sunset at 4:49 pm CST.
Sunshine
The average sunshine in December is 4.8h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 2 in December translates into this advice:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
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?
When are sunrise and sunset in December?
How many hours of sunshine does Roper have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Roper, KY
- Average high temperature in December: 47.3°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (43.2°F).
- Average low temperature in December: 35.4°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in December
Roper, KY
- 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 (29.95"Hg).
Average wind speed in December
Roper, KY
- Average wind speed in December: 8.6mph
The windiest months (with the highest average wind speed) are January, February, March and April (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in December
Roper, KY
- Average humidity in December: 78%
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Roper, KY
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is April (4.57").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in December
Roper, KY
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in December
Roper, KY
- Average snowfall in December: 0.63"
The month with the highest snowfall is February (1.85").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Roper, KY
- Average snowfall days in December: 1.6 days
The month with the highest number of snowfall days is January (3.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Roper, KY
- Average daylight in December: 9h and 4min
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 42min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Roper, KY
- Average sunshine days in December: 16.7 days
The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in December
Roper, 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
Roper, KY
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in December
Roper, KY
- 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).
Roper, Kentucky, USA
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