August weather forecast
Rowlett, TX

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Weather in August

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

Temperature

In Rowlett, the highest average temperatures are observed in August, with a high of 95.4°F (35.2°C) and a low of 75.2°F (24°C).

Heat index

August's mean heat index is estimated at a blazing hot 113°F (45°C). Be on the lookout: Heat cramps and heat exhaustion are anticipated. Continued exertion can result in heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

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

Rainfall

In August, the rain falls for 11.2 days. Throughout August, 1.77" (45mm) of precipitation is accumulated. Throughout the year, 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 Rowlett, the average length of the day in August is 13h and 20min.
On the first day of August, 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

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

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 7 during August leads to these instructions:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months?

The average temperatures reach their apex in August, averaging 95.4°F (35.2°C) at the high end and 75.2°F (24°C) at the low end.

How hot does it get in August?

Rowlett in August has an average high-temperature of 95.4°F (35.2°C) and an average low-temperature of 75.2°F (24°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is estimated at 113°F (45°C).

What is the least humid month?

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

What is the average humidity in August?

In August, the average relative humidity is 59%.

How many days does it rain in August in Rowlett?

In Rowlett, Texas, in August, it is raining for 11.2 days, with typically 1.77" (45mm) of accumulated precipitation.

When it does not snow?

March through December are months without snowfall.

How many hours of daylight does Rowlett have in August?

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

When is the sunrise / sunset in August?

On the first day of August, 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?

The month with the most sunshine is August, with an average of 11.1h of sunshine.

How long on average sun shines in August?

In August, the average sunshine duration is 11.1h.

When is the highest UV index?

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

How high is the UV index in August?

The average daily maximum UV index in August is 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to Sun's UV rays.
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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Rowlett, Texas, USA

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