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
Richardson's progression into December involves a gentle drop in the average high-temperature, from a cool 53.8°F (12.1°C) in November to a frosty 45°F (7.2°C). Throughout December in Richardson, Kentucky, a steady low-temperature average of 32.9°F (0.5°C) is noted.Humidity
In December, the average relative humidity is 80%.Rainfall
In Richardson, in December, during 12.6 rainfall days, 3.19" (81mm) of precipitation is typically accumulated. Throughout the year, there are 176.7 rainfall days, and 33.82" (859mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Richardson, in December, snow falls for 6.6 days, with typically accumulated 2.56" (65mm) of snow. In Richardson, during the entire year, snow falls for 33.2 days and aggregates up to 13.35" (339mm) 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 December in Richardson, sunrise is at 7:28 am and sunset at 5:11 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:21 pm EST.
Sunshine
In Richardson, Kentucky, the average sunshine in December is 4.2h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Richardson. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: A daily maximum UV index of 2 in December translates into the following instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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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 much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Richardson have in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Richardson, KY
- Average high temperature in December: 45°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 (39.7°F).
- Average low temperature in December: 32.9°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in December
Richardson, KY
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
Richardson, KY
- Average wind speed in December: 6.2mph
The windiest months (with the highest average wind speed) are January, February and April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Richardson, KY
- Average humidity in December: 80%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is August (74%).
Average rainfall in December
Richardson, KY
- Average rainfall in December: 3.19"
The wettest month (with the highest rainfall) is April (3.43").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Richardson, KY
- Average rainfall days in December: 12.6 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is November (10.6 days).
Average snowfall in December
Richardson, KY
- Average snowfall in December: 2.56"
The month with the highest snowfall is February (3.58").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Richardson, KY
- Average snowfall days in December: 6.6 days
The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Richardson, 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 1min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Richardson, KY
- Average sunshine days in December: 13.2 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (9.7 days).
Average UV index in December
Richardson, 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
Richardson, KY
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Richardson, KY
- Average visibility in December: 5mi
The months with the highest visibility are April, June, August, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September and December (5mi).
Richardson, Kentucky, USA
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