August weather forecast
Granbury, TX

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Weather in August

August, the last month of the summer in Granbury, is also a sweltering month, with an average temperature fluctuating between 95.5°F (35.3°C) and 75°F (23.9°C).

Temperature

In Granbury, the average temperatures in August are the highest, with a peak at 95.5°F (35.3°C) and a low of 75°F (23.9°C).

Heat index

For August, the heat index is estimated at an extremely hot 111.2°F (44°C). Be on the lookout: Heat cramps and heat exhaustion are anticipated. Continued exertion can result in heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', arises from combining readings of air temperature and relative moisture content. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. 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.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

August is the least humid month, with an average relative humidity of 55%.

Rainfall

In Granbury, during August, the rain falls for 11.8 days and regularly aggregates up to 1.65" (42mm) of precipitation. In Granbury, during the entire year, the rain falls for 111.1 days and collects up to 17.52" (445mm) of precipitation.

Snowfall

January, March through November are months without snowfall.

Daylight

In August, the average length of the day in Granbury is 13h and 19min.
On the first day of the month, sunrise is at 6:46 am and sunset at 8:28 pm. On the last day of August, in Granbury, sunrise is at 7:06 am and sunset at 7:56 pm CDT.

Sunshine

The average sunshine in August in Granbury, Texas, is 10.7h.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A typical high UV index of 7 in August suggests the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the warmest month in Granbury?

August is the month when Granbury's temperatures reach their peak, with averages of 95.5°F (35.3°C) and lows of 75°F (23.9°C).

How hot does it get in Granbury in August?

The average high-temperature and low-temperature in Granbury, Texas, during August are 95.5°F (35.3°C) and 75°F (23.9°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is estimated at 111.2°F (44°C).

What is the least humid month in Granbury?

With an average relative humidity of 55%, August is the least humid month in Granbury.

What is the average humidity in August in Granbury?

The average relative humidity in August in Granbury is 55%.

How many days does it rain in August in Granbury?

In Granbury, Texas, during August, the rain falls for 11.8 days and regularly aggregates up to 1.65" (42mm) of precipitation.

When it does not snow in Granbury?

In Granbury, snow does not fall in January, March through November.

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

In Granbury, the average day length in August is 13h and 19min.

What time are sunrise and sunset in August in Granbury?

On the first day of August in Granbury, Texas, sunrise is at 6:46 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 7:56 pm CDT.

How long on average sun shines in August in Granbury?

In August, the average sunshine duration in Granbury is 10.7h.

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

The months with the highest UV index in Granbury are June through August, with an average maximum UV index of 7.

How high is the UV index in August in Granbury?

In August, the average daily maximum UV index in Granbury is 7. A UV Index reading of 6 to 7 represents a high health vulnerability 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
Granbury, TX

Average temperature in August - Granbury, TX
  • Average high temperature in August: 95.5°F

The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (56.1°F).

  • Average low temperature in August: 75°F

The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).

Average pressure in August
Granbury, TX

Average pressure in August - Granbury, TX
  • Average pressure in August: 29.92"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
Granbury, TX

Average wind speed in August - Granbury, TX
  • Average wind speed in August: 7.3mph

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is September (7mph).

Average humidity in August
Granbury, TX

Average humidity in August - Granbury, TX
  • Average humidity in August: 55%

The month with the highest relative humidity is May (72%).
The month with the lowest relative humidity is August (55%).

Average rainfall in August
Granbury, TX

Average rainfall in August - Granbury, TX
  • Average rainfall in August: 1.65"

The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is December (0.71").

Average rainfall days in August
Granbury, TX

Average rainfall days in August - Granbury, TX
  • Average rainfall days in August: 11.8 days

The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (4.8 days).

Average snowfall in August
Granbury, TX

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

The month with the highest snowfall is February (0.39").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").

Average snowfall days in August
Granbury, TX

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

The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September and October (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in August: 10h and 4min

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
Granbury, TX

Average sunshine days in August - Granbury, TX
  • Average sunshine days in August: 16.6 days

The month with the most sunshine days is January (25.5 days).
The month with the least sunshine days is May (15 days).

Average UV index in August
Granbury, TX

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

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

Average cloud cover in August
Granbury, TX

Average cloud cover in August - Granbury, TX
  • Average cloud cover in August: 20

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 20).

Average visibility in August
Granbury, TX

Average visibility in August - Granbury, 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).

Granbury, Texas, USA

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