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 transition into December subtly indicates a reduction in the average high-temperature, down to a refreshing 61.9°F (16.6°C) from November's agreeable 68.9°F (20.5°C). December in Port Arthur witnesses an average low-temperature hovering around a cool 50.2°F (10.1°C).Humidity
The average relative humidity in December is 79%.Rainfall
In Port Arthur, Texas, during December, the rain falls for 8.7 days and regularly aggregates up to 0.71" (18mm) of precipitation. Throughout the year, in Port Arthur, there are 132.6 rainfall days, and 12.09" (307mm) of precipitation is accumulated.Snowfall
December is the only month when snow falls in Port Arthur. The month with the most snowfall is December, when snow falls for 0.1 days and typically aggregates up to 0.04" (1mm) of snow.Daylight
The month with the shortest days is December, with an average of 10h and 18min of daylight.On the first day of the month, sunrise is at 6:54 am and sunset at 5:15 pm. On the last day of December, in Port Arthur, sunrise is at 7:11 am and sunset at 5:26 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 5h of sunshine.UV index
With an average maximum UV index of 3, December is the month with the lowest UV index in Port Arthur. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The average daily UV index of 3 in December transforms into the following instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Port Arthur in December?
What is the average humidity in December in Port Arthur?
How many days does it rain in December in Port Arthur?
What is the snowiest month in Port Arthur?
When does it start to snow in Port Arthur?
What is the month with the shortest days in Port Arthur?
What is the average length of the day in December in Port Arthur?
What time are sunrise and sunset in December in Port Arthur?
What is the month with the least sunshine in Port Arthur?
How many hours of sunshine does Port Arthur have in December?
When is the lowest UV index in Port Arthur?
How high is the UV index in December in Port Arthur?
Average temperature in December
Port Arthur, TX
- Average high temperature in December: 61.9°F
The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is January (59.5°F).
- Average low temperature in December: 50.2°F
The month with the highest average low temperature is July (78.4°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).
Average pressure in December
Port Arthur, TX
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Port Arthur, TX
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in December
Port Arthur, TX
- Average humidity in December: 79%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Port Arthur, TX
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is August (2.09").
The driest month (with the least rainfall) is April (0.43").
Average rainfall days in December
Port Arthur, TX
- Average rainfall days in December: 8.7 days
The month with the highest number of rainy days is August (17.9 days).
The months with the least rainy days are January and November (7.8 days).
Average snowfall in December
Port Arthur, TX
- Average snowfall in December: 0.04"
The month with the highest snowfall is December (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Port Arthur, TX
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Port Arthur, TX
- Average daylight in December: 10h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in December
Port Arthur, TX
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is January (21.3 days).
The month with the least sunshine days is August (8.8 days).
Average UV index in December
Port Arthur, TX
- Average UV index in December: 3
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Port Arthur, TX
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 26).
Average visibility in December
Port Arthur, 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).
Port Arthur, Texas, USA
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