August weather forecast
Grapevine, TX

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Weather in August

The last month of the summer, August, is another torrid month in Grapevine, Texas, with an average temperature varying between 96.4°F (35.8°C) and 77.2°F (25.1°C).

Temperature

In Grapevine, Texas, August records the highest average temperatures, peaking at 96.4°F (35.8°C) and reaching a low of 77.2°F (25.1°C).

Heat index

For most parts of August, the heat index is appraised at a blistering 111.2°F (44°C). Keep wary: Heat cramps along with heat exhaustion are expected. Heatstroke is a possible outcome of ongoing activity.
Heat index evaluations are typically in the context of light winds and shaded environments. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are primarily vital for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

With an average relative humidity of 54%, August is the least humid month.

Rainfall

In Grapevine, Texas, in August, during 8.9 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. Throughout the year, there are 97.8 rainfall days, and 9.29" (236mm) of precipitation is accumulated.

Snowfall

In Grapevine, snow does not fall in April through December.

Daylight

In August, the average length of the day in Grapevine is 13h and 20min.
On the first day of the month, sunrise is at 6:42 am and sunset at 8:26 pm. On the last day of August, in Grapevine, sunrise is at 7:02 am and sunset at 7:54 pm CDT.

Sunshine

The average sunshine in August is 11h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index in Grapevine. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 7 in August transforms into the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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Frequently asked questions

What is the warmest month in Grapevine?

August, noted for its average high-temperature of 96.4°F (35.8°C) and an average low-temperature of 77.2°F (25.1°C), is considered the warmest month in Grapevine, Texas.

How hot does it get in Grapevine in August?

August temperatures in Grapevine, Texas, vary between a high-temperature of 96.4°F (35.8°C) and a low-temperature of 77.2°F (25.1°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 111.2°F (44°C).

What is the least humid month in Grapevine?

The least humid month is August, with an average relative humidity of 54%.

What is the average humidity in August in Grapevine?

In August, the average relative humidity in Grapevine is 54%.

How much does it rain in Grapevine in August?

In Grapevine, Texas, during August, the rain falls for 8.9 days and regularly aggregates up to 0.75" (19mm) of precipitation.

When it does not snow in Grapevine?

In Grapevine, snow does not fall in April through December.

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

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

When is the sunrise / sunset in August in Grapevine?

On the first day of August, sunrise is at 6:42 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 7:54 pm CDT.

How long on average sun shines in August in Grapevine?

In August, the average sunshine duration is 11h.

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

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

What is the UV index intensity in August in Grapevine?

The average daily maximum UV index in August in Grapevine, Texas, 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 August
Grapevine, TX

Average temperature in August - Grapevine, TX
  • Average high temperature in August: 96.4°F

The warmest month (with the highest average high temperature) is August (96.4°F).
The month with the lowest average high temperature is January (54.5°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 (38.8°F).

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Average pressure in August
Grapevine, TX

Average pressure in August - Grapevine, 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 (29.9"Hg).

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Average wind speed in August
Grapevine, TX

Average wind speed in August - Grapevine, TX
  • Average wind speed in August: 7mph

The windiest months (with the highest average wind speed) are March and April (10.1mph).
The calmest month (with the lowest average wind speed) is September (6.7mph).

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Average humidity in August
Grapevine, TX

Average humidity in August - Grapevine, TX
  • Average humidity in August: 54%

The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (54%).

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Average rainfall in August
Grapevine, TX

Average rainfall in August - Grapevine, TX
  • Average rainfall in August: 0.75"

The wettest month (with the highest rainfall) is May (1.34").
The driest month (with the least rainfall) is February (0.39").

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Average rainfall days in August
Grapevine, TX

Average rainfall days in August - Grapevine, TX
  • Average rainfall days in August: 8.9 days

The month with the highest number of rainy days is September (10.5 days).
The month with the least rainy days is January (4.5 days).

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Average snowfall in August
Grapevine, TX

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

The month with the highest snowfall is February (0.16").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in August
Grapevine, TX

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

The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Grapevine, 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 0min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in August
Grapevine, TX

Average sunshine days in August - Grapevine, TX
  • Average sunshine days in August: 18.1 days

The month with the most sunshine days is January (25.1 days).
The month with the least sunshine days is September (16.8 days).

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Average UV index in August
Grapevine, TX

Average UV index in August - Grapevine, 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
Grapevine, TX

Average cloud cover in August - Grapevine, TX
  • Average cloud cover in August: 19

The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 19).

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Average visibility in August
Grapevine, TX

Average visibility in August - Grapevine, 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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Grapevine, Texas, USA

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