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
Louisville's transition into December involves a shift in temperature, receding from a frosty 48°F (8.9°C) in November to a wintry 37.9°F (3.3°C). Louisville witnesses a consistent average low-temperature of 27°F (-2.8°C) throughout December.Humidity
The average relative humidity in December is 84%.Rainfall
In Louisville, in December, during 6.7 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. Throughout the year, there are 119.1 rainfall days, and 9.69" (246mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Louisville, in December, snow falls for 9 days, with typically accumulated 0.98" (25mm) of snow. Throughout the year, in Louisville, there are 44.3 snowfall days, and 4.49" (114mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:30 am and sunset at 4:57 pm. On the last day of December, sunrise is at 7:49 am and sunset at 5:07 pm EST.
Sunshine
In December, the average sunshine is 3.4h.UV index
The month with the lowest UV index in Louisville is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 1 in December transforms into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Louisville?
What is the average humidity in December in Louisville?
How much does it rain in Louisville in December?
How much does it snow in Louisville in December?
What is the month with the shortest days in Louisville?
How many hours of daylight does Louisville have in December?
When are sunrise and sunset in December in Louisville?
How many hours of sunshine does Louisville have in December?
When is the lowest UV index in Louisville?
How high is the UV index in December in Louisville?
Average temperature in December
Louisville, OH
- Average high temperature in December: 37.9°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 27°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Louisville, OH
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Louisville, OH
- Average wind speed in December: 7.9mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).
Average humidity in December
Louisville, OH
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in December
Louisville, OH
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is June (1.14").
The driest month (with the least rainfall) is September (0.55").
Average rainfall days in December
Louisville, OH
- Average rainfall days in December: 6.7 days
The month with the highest number of rainy days is May (14 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in December
Louisville, OH
- Average snowfall in December: 0.98"
The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Louisville, OH
- Average snowfall days in December: 9 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Louisville, OH
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in December
Louisville, OH
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (13.9 days).
Average UV index in December
Louisville, OH
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Louisville, OH
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Louisville, OH
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Louisville, Ohio, USA
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