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 shift from November to December in Richardson involves a decrease in the average high-temperature, dropping from a comfortable 64°F (17.8°C) to a cool 55°F (12.8°C). December nights in Richardson experience a consistent temperature drop to an icy 41.5°F (5.3°C).Humidity
In December, the average relative humidity in Richardson is 69%.Rainfall
In Richardson, in December, it is raining for 8.1 days, with typically 0.94" (24mm) of accumulated precipitation. Throughout the year, in Richardson, there are 118.4 rainfall days, and 15.51" (394mm) of precipitation is accumulated.Snowfall
Months with snowfall in Richardson, Texas, are January, February, November and December. In Richardson, in December, snow falls for 0.3 days, with typically accumulated 0.04" (1mm) of snow. Throughout the year, there are 2.3 snowfall days, and 0.51" (13mm) of snow is accumulated.Daylight
December has the shortest days of the year in Richardson, Texas, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 7:12 am and sunset at 5:20 pm. On the last day of December, in Richardson, sunrise is at 7:29 am and sunset at 5:30 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 5.6h of sunshine.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 3 during December translates into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Boost your sun resistance with garments that are densely woven yet spacious. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
What is the average December temperature in Richardson?
What is the average humidity in December in Richardson?
How many days does it rain in December in Richardson?
How many days does it snow in December in Richardson?
What is the month with the shortest days in Richardson?
What is the average length of the day in December in Richardson?
When are sunrise and sunset in December in Richardson?
What is the month with the least sunshine in Richardson?
How long on average sun shines in December in Richardson?
What are the months with the lowest UV index in Richardson?
What is the UV index reading in December in Richardson?
Average temperature in December
Richardson, TX
- Average high temperature in December: 55°F
The warmest month (with the highest average high temperature) is August (95.7°F).
The month with the lowest average high temperature is January (54°F).
- Average low temperature in December: 41.5°F
The month with the highest average low temperature is August (76.5°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).
Average pressure in December
Richardson, TX
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Richardson, TX
- Average wind speed in December: 8.5mph
The windiest months (with the highest average wind speed) are March and April (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.7mph).
Average humidity in December
Richardson, TX
- Average humidity in December: 69%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (56%).
Average rainfall in December
Richardson, TX
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days in December
Richardson, TX
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is September (13.1 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in December
Richardson, TX
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.31").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in December
Richardson, TX
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Richardson, TX
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in December
Richardson, TX
- Average sunshine days in December: 20.8 days
The month with the most sunshine days is January (23.7 days).
The month with the least sunshine days is September (14.5 days).
Average UV index in December
Richardson, TX
- Average UV index in December: 3
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in December
Richardson, TX
- Average cloud cover in December: 38
The months with the most cloud cover are February and March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in December
Richardson, TX
- 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).
Richardson, Texas, USA
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