July weather forecast
Port Arthur, TX

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The inlet of the ship channel on Port Arthur, Texas
The inlet of the ship channel on Port Arthur, Texas

Weather in July

July, like June, is a hot summer month in Port Arthur, Texas, with an average temperature varying between 90.7°F (32.6°C) and 78.4°F (25.8°C).

Temperature

Port Arthur, Texas, experiences a recorded average high-temperature of a still hot 90.7°F (32.6°C) in July, closely aligned with June's 88.9°F (31.6°C). In Port Arthur, July nights cool down to an average of 78.4°F (25.8°C).

Heat index

The heat index in July is calculated to be a scorching 111.2°F (44°C). Keep guard: Heat cramps and heat exhaustion are likely. Continued activity increases the risk of heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In Port Arthur, the average relative humidity in July is 75%.

Rainfall

In Port Arthur, during July, the rain falls for 16.2 days and regularly aggregates up to 1.54" (39mm) of precipitation. Throughout the year, there are 132.6 rainfall days, and 12.09" (307mm) of precipitation is accumulated.

Snowfall

In Port Arthur, snow does not fall in January through November.

Daylight

The average length of the day in July in Port Arthur is 13h and 51min.
On the first day of July, sunrise is at 6:18 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 8:09 pm CDT.

Sunshine

In July, the average sunshine in Port Arthur is 10.6h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high UV index of 7 in July translates into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
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Frequently asked questions

How hot does it get in Port Arthur in July?

The high-temperature, in July, in Port Arthur, records 90.7°F (32.6°C), while the low-temperature is 78.4°F (25.8°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 111.2°F (44°C).

What is the average humidity in July in Port Arthur?

The average relative humidity in July in Port Arthur, Texas, is 75%.

How many days does it rain in July in Port Arthur?

In Port Arthur, during July, the rain falls for 16.2 days and regularly aggregates up to 1.54" (39mm) of precipitation.

When it does not snow in Port Arthur?

In Port Arthur, Texas, snow does not fall in January through November.

What is the average length of the day in July in Port Arthur?

The average day length in July in Port Arthur, Texas, is 13h and 51min.

When is the sunrise / sunset in July in Port Arthur?

On the first day of July in Port Arthur, Texas, sunrise is at 6:18 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 8:09 pm CDT.

How long on average sun shines in July in Port Arthur?

The average sunshine duration in July in Port Arthur is 10.6h.

What are the months with the highest UV index in Port Arthur?

May through August, with an average maximum UV index of 7, are months with the highest UV index in Port Arthur, Texas.

How high is the UV index in July in Port Arthur?

The average daily maximum UV index in July is 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Port Arthur, TX

Average temperature in July - Port Arthur, TX
  • Average high temperature in July: 90.7°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 July: 78.4°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).

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Average pressure in July
Port Arthur, TX

Average pressure in July - Port Arthur, TX
  • Average pressure in July: 29.98"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).

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Average wind speed in July
Port Arthur, TX

Average wind speed in July - Port Arthur, TX
  • Average wind speed in July: 7.1mph

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).

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Average humidity in July
Port Arthur, TX

Average humidity in July - Port Arthur, TX
  • Average humidity in July: 75%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in July
Port Arthur, TX

Average rainfall in July - Port Arthur, TX
  • Average rainfall in July: 1.54"

The wettest month (with the highest rainfall) is August (2.09").
The driest month (with the least rainfall) is April (0.43").

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Average rainfall days in July
Port Arthur, TX

Average rainfall days in July - Port Arthur, TX
  • Average rainfall days in July: 16.2 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).

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Average snowfall in July
Port Arthur, TX

Average snowfall in July - Port Arthur, TX
  • Average snowfall in July: 0"

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").

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Average snowfall days in July
Port Arthur, TX

Average snowfall days in July - Port Arthur, TX
  • Average snowfall days in July: 0 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).

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Average daylight in July /
Average sunshine in July
Port Arthur, TX

Average daylight in July / Average sunshine in July - Port Arthur, TX
  • Average daylight in July: 13h and 5min

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 July: 10h and 4min

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).

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Average sunshine days in July
Port Arthur, TX

Average sunshine days in July - Port Arthur, TX
  • Average sunshine days in July: 10.6 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).

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Average UV index in July
Port Arthur, TX

Average UV index in July - Port Arthur, TX
  • Average UV index in July: 7

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).

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Average cloud cover in July
Port Arthur, TX

Average cloud cover in July - Port Arthur, TX
  • Average cloud cover in July: 28

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 26).

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Average visibility in July
Port Arthur, TX

Average visibility in July - Port Arthur, TX
  • Average visibility in July: 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).

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Port Arthur, Texas, USA

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