August weather forecast
Rowlett, TX

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Weather in August

The last month of the summer, August, is a torrid month in Rowlett, Texas, with an average temperature varying between 75.2°F (24°C) and 95.4°F (35.2°C).

Temperature

August, with its average high-temperature of 95.4°F (35.2°C) and an average low-temperature of 75.2°F (24°C), holds the record as the warmest month.

Heat index

For August, the heat index is calculated to be a life-threatening hot 113°F (45°C). Stay vigilant: Heat cramps along with heat exhaustion are expected. Heatstroke may follow prolonged exertion.
When assessing, remember that heat index measurements are for light winds and shaded spots. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

August is the least humid month, with an average relative humidity of 59%.

Rainfall

In Rowlett, in August, it is raining for 11.2 days, with typically 1.77" (45mm) of accumulated precipitation. Throughout the year, in Rowlett, there are 120.2 rainfall days, and 17.87" (454mm) of precipitation is accumulated.

Snowfall

In Rowlett, snow does not fall in March through December.

Daylight

In August, the average length of the day is 13h and 20min.
On the first day of August in Rowlett, sunrise is at 6:40 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 7:51 pm CDT.

Sunshine

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

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: A typical high UV index of 7 in August suggests the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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Frequently asked questions

What is the hottest time of year in Rowlett?

With an average high-temperature of 95.4°F (35.2°C) and an average low-temperature of 75.2°F (24°C), August is the warmest month in Rowlett, Texas.

How hot does it get in Rowlett in August?

In Rowlett, 95.4°F (35.2°C) is the average high-temperature and 75.2°F (24°C) is the average low-temperature during August. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is calculated to be 113°F (45°C).

What is the least humid month in Rowlett?

The least humid month in Rowlett is August, with an average relative humidity of 59%.

What is the average humidity in August in Rowlett?

The average relative humidity in August in Rowlett, Texas, is 59%.

How many days does it rain in August in Rowlett?

In Rowlett, Texas, during August, the rain falls for 11.2 days and regularly aggregates up to 1.77" (45mm) of precipitation.

When it does not snow in Rowlett?

March through December are months without snowfall.

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

In August, the average day length is 13h and 20min.

What time are sunrise and sunset in August in Rowlett?

On the first day of August in Rowlett, Texas, sunrise is at 6:40 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 7:51 pm CDT.

What month has the most sunshine in Rowlett?

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

How many hours of sunshine does Rowlett have in August?

In Rowlett, the average sunshine duration in August is 11.1h.

When is the highest UV index in Rowlett?

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

What is the UV index intensity in August in Rowlett?

In August, the average daily maximum UV index in Rowlett, Texas, is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's 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 August
Rowlett, TX

Average temperature in August - Rowlett, TX
  • Average high temperature in August: 95.4°F

The warmest month (with the highest average high temperature) is August (95.4°F).
The month with the lowest average high temperature is January (54.1°F).

  • Average low temperature in August: 75.2°F

The month with the highest average low temperature is August (75.2°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).

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Average pressure in August
Rowlett, TX

Average pressure in August - Rowlett, TX
  • Average pressure in August: 29.93"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).

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Average wind speed in August
Rowlett, TX

Average wind speed in August - Rowlett, TX
  • Average wind speed in August: 6.8mph

The windiest months (with the highest average wind speed) are March and April (9.8mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).

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Average humidity in August
Rowlett, TX

Average humidity in August - Rowlett, TX
  • Average humidity in August: 59%

The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (59%).

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Average rainfall in August
Rowlett, TX

Average rainfall in August - Rowlett, TX
  • Average rainfall in August: 1.77"

The wettest month (with the highest rainfall) is May (2.4").
The driest month (with the least rainfall) is February (0.79").

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Average rainfall days in August
Rowlett, TX

Average rainfall days in August - Rowlett, TX
  • Average rainfall days in August: 11.2 days

The month with the highest number of rainy days is September (12.5 days).
The month with the least rainy days is January (5.6 days).

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Average snowfall in August
Rowlett, TX

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

The month with the highest snowfall is February (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in August
Rowlett, TX

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

The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Rowlett, TX

Average daylight in August / Average sunshine in August - Rowlett, TX
  • Average daylight in August: 13h and 2min

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 August: 11h and 1min

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 30min).

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Average sunshine days in August
Rowlett, TX

Average sunshine days in August - Rowlett, TX
  • Average sunshine days in August: 17.1 days

The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is June (16.2 days).

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Average UV index in August
Rowlett, TX

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

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

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Average cloud cover in August
Rowlett, TX

Average cloud cover in August - Rowlett, TX
  • Average cloud cover in August: 21

The months with the most cloud cover are February and March (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 21).

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Average visibility in August
Rowlett, TX

Average visibility in August - Rowlett, TX
  • Average visibility in August: 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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Rowlett, Texas, USA

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