August weather forecastGrapevine, TX
August
Weather in August
August, the last month of the summer in Grapevine, is also a fiery hot month, with an average temperature varying between 96.4°F (35.8°C) and 77.2°F (25.1°C).Temperature
August, with an average high of 96.4°F (35.8°C) and a low of 77.2°F (25.1°C), signifies the warmest month of the year.Heat index
During August, the heat index is calculated to be a scorching 111.2°F (44°C). Watchful: Heat cramps and heat exhaustion are predicted. Continued exertion could lead to heatstroke.Data suggests that the heat index is set for environments in shade and with a light wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', determines the feeling of heat when you account for the relative humidity. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. 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 highly important for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.
Humidity
August is the least humid month, with an average relative humidity of 54%.Rainfall
In Grapevine, during August, the rain falls for 8.9 days and regularly aggregates up to 0.75" (19mm) of precipitation. 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.Daylight
In Grapevine, the average length of the day in August is 13h and 20min.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.
Sunshine
In Grapevine, 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. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In August, the maximum UV index of 7 suggests this advice:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in August /
Average sunshine in August
Grapevine, TX
- Average daylight in August: 13h and 18min
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).
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).
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).
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).
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).
