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
Start of December brings a slight shift in the average high-temperature, dipping a bit from November's pleasant 72.1°F (22.3°C) to a comfortable 64.9°F (18.3°C). In the month of December, the nighttime temperature in Crystal City dips to a steady average of 48.2°F (9°C).Humidity
In December, the average relative humidity is 63%.Rainfall
In Crystal City, in December, during 6.2 rainfall days, 0.47" (12mm) of precipitation is typically accumulated. Throughout the year, there are 101.5 rainfall days, and 12.48" (317mm) of precipitation is accumulated.Snowfall
In Crystal City, snow does not fall in February through December.Daylight
The month with the shortest days in Crystal City is December, with an average of 10h and 24min of daylight.On the first day of December in Crystal City, sunrise is at 7:15 am and sunset at 5:41 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:53 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 5.7h of sunshine.UV index
The months with the lowest UV index in Crystal City are January and December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 4 in December translates into this advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Crystal City in December?
What is the average humidity in December in Crystal City?
How much does it rain in Crystal City in December?
When it does not snow in Crystal City?
Does it snow in Crystal City in December?
What is the month with the shortest days in Crystal City?
How many hours of daylight does Crystal City have in December?
When are sunrise and sunset in December in Crystal City?
What is the month with the least sunshine in Crystal City?
How long on average sun shines in December in Crystal City?
What are the months with the lowest UV index in Crystal City?
What is the UV index intensity in December in Crystal City?
Average temperature in December
Crystal City, TX
- Average high temperature in December: 64.9°F
The warmest month (with the highest average high temperature) is August (99.1°F).
The month with the lowest average high temperature is January (64.8°F).
- Average low temperature in December: 48.2°F
The month with the highest average low temperature is August (79°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).
Average pressure in December
Crystal City, TX
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are May and June (29.88"Hg).
Average wind speed in December
Crystal City, TX
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is May (10.9mph).
The calmest month (with the lowest average wind speed) is December (7mph).
Average humidity in December
Crystal City, TX
- Average humidity in December: 63%
The month with the highest relative humidity is November (64%).
The month with the lowest relative humidity is August (49%).
Average rainfall in December
Crystal City, TX
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in December
Crystal City, TX
- Average rainfall days in December: 6.2 days
The month with the highest number of rainy days is September (14.5 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in December
Crystal City, TX
- Average snowfall in December: 0"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Crystal City, TX
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and December (0 days).
Average daylight in December /
Average sunshine in December
Crystal City, TX
- Average daylight in December: 10h and 2min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Crystal City, TX
- Average sunshine days in December: 22.3 days
The month with the most sunshine days is January (24.5 days).
The month with the least sunshine days is September (13.9 days).
Average UV index in December
Crystal City, TX
- Average UV index in December: 4
The months with the highest UV index are June, July and August (UV index 8).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in December
Crystal City, TX
- Average cloud cover in December: 33
The months with the most cloud cover are March and May (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in December
Crystal City, 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).
Crystal City, Texas, USA
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