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
With the beginning of December, the average high-temperature in Shelbyville shows a decrease, transitioning from a fresh 53.1°F (11.7°C) in November to a chilly 43.9°F (6.6°C). An average low-temperature of 31.6°F (-0.2°C) is anticipated throughout the nights during December.Humidity
In December, the average relative humidity is 80%.Rainfall
In Shelbyville, during December, the rain falls for 12.5 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, in Shelbyville, there are 161.4 rainfall days, and 32.09" (815mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In December, it is snowing for 4.8 days. Throughout December, 1.14" (29mm) of snow is accumulated. In Shelbyville, during the entire year, snow falls for 25.3 days and aggregates up to 6.81" (173mm) of snow.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:39 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 5:31 pm EST.
Sunshine
In Shelbyville, the average sunshine in December is 4.4h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The average daily UV index of 2 in December transforms into the following instructions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in December?
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?
How many hours of daylight does Shelbyville have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Shelbyville have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Shelbyville, KY
- Average high temperature in December: 43.9°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 (39°F).
- Average low temperature in December: 31.6°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure in December
Shelbyville, KY
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Shelbyville, KY
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in December
Shelbyville, KY
- Average humidity in December: 80%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are August, September and October (75%).
Average rainfall in December
Shelbyville, KY
- Average rainfall in December: 2.6"
The wettest month (with the highest rainfall) is April (3.43").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in December
Shelbyville, KY
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (9.6 days).
Average snowfall in December
Shelbyville, KY
- Average snowfall in December: 1.14"
The months with the highest snowfall are February and March (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Shelbyville, KY
- Average snowfall days in December: 4.8 days
The month with the highest number of snowfall days is January (6.9 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
Shelbyville, KY
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 4h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Shelbyville, KY
- Average sunshine days in December: 15.1 days
The month with the most sunshine days is October (18.7 days).
The months with the least sunshine days are May and July (11.2 days).
Average UV index in December
Shelbyville, 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, November and December (UV index 2).
Average cloud cover in December
Shelbyville, KY
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Shelbyville, 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).
Shelbyville, Kentucky, USA
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