Dallas
Texas, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Dallas, TX

Dallas, Texas, modern city skyscrapers viewed from above, just before sunset
Dallas, Texas, modern city skyscrapers viewed from above, just before sunset
August, the last month of the summer, in Dallas, is another very hot month, with average temperature fluctuating between 77.2°F (25.1°C) and 96.1°F (35.6°C).

Temperature

August is the warmest month, with an average high-temperature of 96.1°F (35.6°C) and an average low-temperature of 77.2°F (25.1°C).

Heat index

The average heat index is estimated at a scorching 111.9°F (44.4°C). Be wary - heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like activity, wind, pregnancy, and differences in body mass, height, and shape affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The least humid month is August, with an average relative humidity of 55%.

Rainfall

In Dallas, it is raining for 13.3 days, with typically 2.6" (66mm) of accumulated precipitation. Throughout the year, there are 141.2 rainfall days, and 30.12" (765mm) of precipitation is accumulated.

Snowfall

In Dallas snow does not fall in March through October.

Daylight

The average length of the day in August is 13.3h.

Sunshine

With an average of 11.1h of sunshine, August has the most sunshine of the year.

UV index

Months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from the exposure to the Sun's UV rays for the average person.
Note: In August, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the warmest month in Dallas?

August is the warmest month, with an average high-temperature of 96.1°F (35.6°C) and an average low-temperature of 77.2°F (25.1°C).

What is the temperature in August in Dallas?

In August, in Dallas, Texas, the average high-temperature is 96.1°F (35.6°C), and the average low-temperature is 77.2°F (25.1°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), that takes the relative humidity and factores it into the air temperature reading, in August is calculated to 111.9°F (44.4°C).

What is the least humid month in Dallas?

The least humid month in Dallas, Texas, is August, with an average relative humidity of 55%.

What is the average humidity in August in Dallas?

In August, the average relative humidity in Dallas, Texas, is 55%.

How much does it rain in Dallas in August?

In August, in Dallas, Texas, the rain falls for 13.3 days. Throughout August, 2.6" (66mm) of precipitation is accumulated.

When it does not snow in Dallas?

March through October are months without snowfall.

What is the average length of the day in August in Dallas?

In Dallas, the average length of the day in August is 13.3h.

What month has the most sunshine in Dallas?

August has the most sunshine of the year in Dallas, Texas, with an average of 11.1h of sunshine.

How long on average sun shines in August in Dallas?

In August, the average sunshine in Dallas, Texas, is 11.1h.

What is the month with the highest UV index in Dallas?

Months with the highest UV index are May through August, with an average maximum UV index of 7.

What is the UV index intensity in August in Dallas?

In Dallas, the average daily maximum UV index in August is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in August - Dallas, TX
  • Average high temperature in August: 96.1°F

The warmest month (with the highest average high temperature) is August (96.1°F).
The month with the lowest average high temperature is January (54.3°F).

  • Average low temperature in August: 77.2°F

The month with the highest average low temperature is August (77.2°F).
The coldest month (with the lowest average low temperature) is January (39.2°F).

Average humidity in August - Dallas, TX
  • Average humidity in August: 55%

The month with the highest relative humidity is May (72%).
The month with the lowest relative humidity is August (55%).

Average rainfall in August - Dallas, TX
  • Average rainfall in August: 2.6"

The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the lowest rainfall) is February (1.61").

Average rainfall days in August - Dallas, TX
  • Average rainfall days in August: 13.3 days

The month with the highest number of rainy days is May (15.8 days).
The month with the lowest number of rainy days is January (6.7 days).

Average snowfall in August - Dallas, TX
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.43").
Months with the lowest snowfall are March, April, May, June, July, August, September and October (0").

Average snowfall days in August - Dallas, TX
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (1.2 days).
Months with the lowest number of snowfall days are March, April, May, June, July, August, September and October (0 days).

Average daylight in August / Average sunshine in August - Dallas, TX
  • Average daylight in August: 13.3h

The month with the longest days is June (Average daylight: 14.3h).
The month with shortest days is December (Average daylight: 10h).

  • Average sunshine in August: 11.1h

The month with most sunshine is August (Average sunshine: 11.1h).
The month with least sunshine is December (Average sunshine: 5.6h).

Average UV index in August - Dallas, TX
  • Average UV index in August: 7

Months with the highest UV index are May, June, July and August (UV index 7).
Months with the lowest UV index are January and December (UV index 3).