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 coincides with a drop in the average high-temperature, decreasing from November's comfortable 64°F (17.8°C) to a cool 55°F (12.8°C). December brings an average low-temperature of 41.2°F (5.1°C) to Rockwall.Humidity
The average relative humidity in December in Rockwall is 72%.Rainfall
In Rockwall, in December, during 9.9 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. Throughout the year, in Rockwall, Texas, there are 146.2 rainfall days, and 32.91" (836mm) of precipitation is accumulated.Snowfall
March through October and December are months without snowfall.Daylight
The month with the shortest days in Rockwall is December, with an average of 10h and 0min of daylight.On the first day of December in Rockwall, sunrise is at 7:11 am and sunset at 5:19 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:29 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5.4h of sunshine.UV index
The months with the lowest UV index in Rockwall, Texas, are January and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 3 in December translates into this advice:
Adopt protective measures - It is advised to guard against sun damage. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Frequently asked questions
What is the temperature in December in Rockwall?
What is the average humidity in December in Rockwall?
How much does it rain in Rockwall in December?
When it does not snow in Rockwall?
Does it snow in Rockwall in December?
What is the month with the shortest days in Rockwall?
How many hours of daylight does Rockwall have in December?
When is the sunrise / sunset in December in Rockwall?
What is the month with the least sunshine in Rockwall?
How many hours of sunshine does Rockwall have in December?
What are the months with the lowest UV index in Rockwall?
What is the UV index reading in December in Rockwall?
Average temperature in December
Rockwall, TX
- Average high temperature in December: 55°F
The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (54°F).
- Average low temperature in December: 41.2°F
The months with the highest average low temperature are July and August (74.8°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in December
Rockwall, 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
Rockwall, TX
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is March (9.6mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in December
Rockwall, TX
- Average humidity in December: 72%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (60%).
Average rainfall in December
Rockwall, TX
- Average rainfall in December: 2.28"
The wettest month (with the highest rainfall) is October (4.21").
The driest month (with the least rainfall) is January (1.81").
Average rainfall days in December
Rockwall, TX
- Average rainfall days in December: 9.9 days
The month with the highest number of rainy days is September (15.2 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Rockwall, TX
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.87").
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0").
Average snowfall days in December
Rockwall, TX
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Rockwall, 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 2min
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 24min).
Average sunshine days in December
Rockwall, TX
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is January (21.4 days).
The month with the least sunshine days is September (13.4 days).
Average UV index in December
Rockwall, TX
- Average UV index in December: 3
The months with the highest UV index are 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
Rockwall, TX
- Average cloud cover in December: 40
The months with the most cloud cover are February and March (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in December
Rockwall, 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).
Rockwall, Texas, USA
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