August weather forecast
Grapevine, TX

Weather in August

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

Temperature

August is the warmest month, with an average high-temperature of 96.4°F (35.8°C) and an average low-temperature of 77.2°F (25.1°C).

Heat index

The average heat index in August is evaluated at a scorching 111.2°F (44°C). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like metabolic differences, wind, clothing, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. 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

August is the least humid month in Grapevine, with an average relative humidity of 54%.

Rainfall

In August, the rain falls for 8.9 days. Throughout August, 0.75" (19mm) of precipitation is accumulated. Throughout the year, there are 97.8 rainfall days, and 9.29" (236mm) of precipitation is accumulated.

Snowfall

April through December are months without snowfall in Grapevine, Texas.

Daylight

In Grapevine, the average length of the day in August is 13h and 20min.
On the first day of the month, sunrise is at 6:41 am and sunset at 8:27 pm. On the last day of August, sunrise is at 7:02 am and sunset at 7:55 pm CDT.

Sunshine

In August, the average sunshine is 11h.

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 threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily maximum UV index of 7 in August interpret into the following advice:
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. 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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FAQ

What is the warmest month in Grapevine?

The warmest month is August, with an average high-temperature of 96.4°F (35.8°C) and an average low-temperature of 77.2°F (25.1°C).

What is the temperature in August in Grapevine?

In August, in Grapevine, Texas, the average high-temperature is 96.4°F (35.8°C), and the average low-temperature is 77.2°F (25.1°C). in August, the average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 111.2°F (44°C).

What is the least humid month in Grapevine?

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

What is the average humidity in August in Grapevine?

In Grapevine, the average relative humidity in August 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, Texas, snow does not fall in April through December.

How many hours of daylight does Grapevine have in August?

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

When is the sunrise / sunset in August in Grapevine?

In August, on the first day of the month, sunrise is at 6:41 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 7:55 pm CDT.

How long on average sun shines in August in Grapevine?

In Grapevine, Texas, the average sunshine duration in August is 11h.

What are the months with the highest UV index in Grapevine?

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

What is the UV index intensity in August in Grapevine?

In August, the average daily maximum UV index in Grapevine 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 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 20min

The month with the longest days is June (Average daylight: 14h and 17min).
The month with the shortest days is December (Average daylight: 10h and 1min).

  • 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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