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
December's arrival in Louisville correlates with a reduction in the average high-temperature, down from a fresh 53.2°F (11.8°C) in November to a frosty 44.1°F (6.7°C). Throughout the month of December, Louisville reports a steady low-temperature average of 31.8°F (-0.1°C).Humidity
February and December, with an average relative humidity of 80%, are the most humid months in Louisville.Rainfall
In Louisville, during December, the rain falls for 11.4 days and regularly aggregates up to 1.3" (33mm) of precipitation. Throughout the year, in Louisville, there are 145.2 rainfall days, and 17.64" (448mm) of precipitation is accumulated.Snowfall
Months with snowfall in Louisville are January through April, November and December. In Louisville, during December, snow falls for 5.2 days and regularly aggregates up to 0.51" (13mm) of snow. In Louisville, during the entire year, snow falls for 25 days and aggregates up to 3.7" (94mm) of snow.Daylight
The month with the shortest days in Louisville is December, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 7:41 am and sunset at 5:23 pm. On the last day of December, sunrise is at 7:59 am and sunset at 5:33 pm EST.
Sunshine
January and December, with an average of 4.4h of sunshine, are months with the least sunshine in Louisville.UV index
The months with the lowest UV index in Louisville are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 suggests these recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Louisville in December?
What are the most humid months in Louisville?
What is the average humidity in December in Louisville?
How many days does it rain in December in Louisville?
How many days does it snow in December in Louisville?
What is the month with the shortest days in Louisville?
How many hours of daylight does Louisville have in December?
What time are sunrise and sunset in December in Louisville?
What is the month with the least sunshine in Louisville?
How many hours of sunshine does Louisville have in December?
What are the months with the lowest UV index in Louisville?
How high is the UV index in December in Louisville?
Average temperature in December
Louisville, KY
- Average high temperature in December: 44.1°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 31.8°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure in December
Louisville, KY
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Louisville, KY
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in December
Louisville, KY
- Average humidity in December: 80%
The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are August and October (73%).
Average rainfall in December
Louisville, KY
- Average rainfall in December: 1.3"
The wettest months (with the highest rainfall) are May and July (1.89").
The driest months (with the least rainfall) are January and September (1.06").
Average rainfall days in December
Louisville, KY
- Average rainfall days in December: 11.4 days
The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in December
Louisville, KY
- Average snowfall in December: 0.51"
The month with the highest snowfall is February (1.06").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Louisville, KY
- Average snowfall days in December: 5.2 days
The month with the highest number of snowfall days is January (7.3 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
Louisville, 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 24min).
The months with the least sunshine are January and December (Average sunshine: 4h and 24min).
Average sunshine days in December
Louisville, KY
- Average sunshine days in December: 15.2 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in December
Louisville, 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
Louisville, KY
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Louisville, KY
- Average visibility in December: 6mi
The months with the highest visibility are March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and May (5mi).
Louisville, Kentucky, USA
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