August weather forecast
Round Rock, TX

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Weather in August

The sweltering heat continues in Round Rock as August rolls in. The temperatures remain consistently high and the sunny days are long. The locals adjust their routines to escape the afternoon heat, preferring early morning or evening outings. In terms of rainfall, August sees an increase from July, but the amount is far from its peak during the year. A noteworthy aspect of August is its visibility, which maintains a steady 6 miles throughout the entire year.

Temperature

Round Rock reaches its highest average temperatures in August, measuring 96.1°F (35.6°C) at the peak and 75.4°F (24.1°C) at the lowest.

Heat index

August's heat index is computed to be a blazing hot 114.8°F (46°C). Notice: Heat cramps and heat exhaustion are likely. Continued strenuous activity might lead to heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. 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.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

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

Rainfall

In Round Rock, during August, the rain falls for 9.9 days and regularly aggregates up to 1.89" (48mm) of precipitation. In Round Rock, during the entire year, the rain falls for 139.3 days and collects up to 26.18" (665mm) of precipitation.

Snowfall

March through December are months without snowfall in Round Rock, Texas.

Daylight

In Round Rock, the average length of the day in August is 13h and 13min.
On the first day of the month, sunrise is at 6:49 am and sunset at 8:24 pm. On the last day of August, sunrise is at 7:07 am and sunset at 7:54 pm CDT.

Sunshine

The average sunshine in August is 10.3h.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index in Round Rock. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 7 during August translates into the following directions:
Ward off overexposure. Defence against solar harm is crucial. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year in Round Rock?

Round Rock's temperatures tend to reach their peak averages in August, with a high of 96.1°F (35.6°C) and a low of 75.4°F (24.1°C).

How hot is it in Round Rock in August?

In Round Rock, 96.1°F (35.6°C) is the average high-temperature and 75.4°F (24.1°C) is the average low-temperature during August. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, in August is computed to be 114.8°F (46°C).

What is the least humid month in Round Rock?

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

What is the average humidity in August in Round Rock?

In Round Rock, Texas, the average relative humidity in August is 59%.

How much does it rain in Round Rock in August?

In Round Rock, Texas, in August, it is raining for 9.9 days, with typically 1.89" (48mm) of accumulated precipitation.

When it does not snow in Round Rock?

March through December are months without snowfall in Round Rock.

What is the average length of the day in August in Round Rock?

The average day length in August in Round Rock, Texas, is 13h and 13min.

What time are sunrise and sunset in August in Round Rock?

On the first day of August in Round Rock, Texas, sunrise is at 6:49 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 7:54 pm CDT.

How long on average sun shines in August in Round Rock?

The average sunshine duration in August in Round Rock, Texas, is 10.3h.

When is the highest UV index in Round Rock?

June through August, with an average maximum UV index of 7, are months with the highest UV index in Round Rock, Texas.

How high is the UV index in August in Round Rock?

The average daily maximum UV index in August is 7. A UV Index estimate of 6 to 7 represents a high hazard to health 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
Round Rock, TX

Average temperature in August - Round Rock, TX
  • Average high temperature in August: 96.1°F

The warmest month (with the highest average high temperature) is August (96.1°F).
The month with the lowest average high temperature is January (58.6°F).

  • Average low temperature in August: 75.4°F

The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (42.4°F).

Average pressure in August
Round Rock, TX

Average pressure in August - Round Rock, 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
Round Rock, TX

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

The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is September (6.5mph).

Average humidity in August
Round Rock, TX

Average humidity in August - Round Rock, TX
  • Average humidity in August: 59%

The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (59%).

Average rainfall in August
Round Rock, TX

Average rainfall in August - Round Rock, TX
  • Average rainfall in August: 1.89"

The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is February (1.14").

Average rainfall days in August
Round Rock, TX

Average rainfall days in August - Round Rock, TX
  • Average rainfall days in August: 9.9 days

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in August
Round Rock, TX

Average snowfall in August - Round Rock, 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
Round Rock, TX

Average snowfall days in August - Round Rock, 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
Round Rock, TX

Average daylight in August / Average sunshine in August - Round Rock, TX
  • Average daylight in August: 13h and 1min

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

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days in August
Round Rock, TX

Average sunshine days in August - Round Rock, TX
  • Average sunshine days in August: 19.3 days

The month with the most sunshine days is January (21.1 days).
The months with the least sunshine days are April, May and September (13.3 days).

Average UV index in August
Round Rock, TX

Average UV index in August - Round Rock, 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
Round Rock, TX

Average cloud cover in August - Round Rock, TX
  • Average cloud cover in August: 23

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 23).

Average visibility in August
Round Rock, TX

Average visibility in August - Round Rock, 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).

Round Rock, Texas, USA

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