August weather forecast
Rio Grande City, TX

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Weather in August

August, the last month of the summer in Rio Grande City, is another very hot month, with an average temperature ranging between max 100°F (37.8°C) and min 80.1°F (26.7°C).

Temperature

August is the warmest month, with the temperature often reaching an average high of 100°F (37.8°C) and an average low of 80.1°F (26.7°C).

Heat index

Throughout August, the heat index is computed to be a blazing hot 122°F (50°C). Caution: Heat cramps along with heat exhaustion are expected. Sustained activity could lead to heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are particularly relevant to children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

The least humid month in Rio Grande City is August, with an average relative humidity of 53%.

Rainfall

In Rio Grande City, in August, during 6.9 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Rio Grande City, during the entire year, the rain falls for 98.5 days and collects up to 13.11" (333mm) of precipitation.

Snowfall

March through December are months without snowfall.

Daylight

In Rio Grande City, the average length of the day in August is 13h and 2min.
On the first day of August, sunrise is at 7:01 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:55 pm CDT.

Sunshine

In Rio Grande City, Texas, the average sunshine in August is 9.7h.

UV index

The months with the highest UV index are July and August, with an average maximum UV index of 8. A UV Index estimate of 8 to 10 represents a very high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 8 in August interprets into the following advice:
Being careless can result in skin and eye damage. Always take the necessary safety measures. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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Frequently asked questions

What time of the year is the hottest in Rio Grande City?

With average high temperatures of 100°F (37.8°C) and lows of 80.1°F (26.7°C), August is the warmest month.

How hot does it get in Rio Grande City in August?

The high-temperature during August is 100°F (37.8°C) and the low-temperature is 80.1°F (26.7°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 122°F (50°C).

What is the least humid month in Rio Grande City?

With an average relative humidity of 53%, August is the least humid month in Rio Grande City, Texas.

What is the average humidity in August in Rio Grande City?

The average relative humidity in August is 53%.

How much does it rain in Rio Grande City in August?

In Rio Grande City, Texas, during August, the rain falls for 6.9 days and regularly aggregates up to 0.63" (16mm) of precipitation.

When it does not snow in Rio Grande City?

March through December are months without snowfall.

What is the average length of the day in August in Rio Grande City?

In August, the average day length in Rio Grande City is 13h and 2min.

When are sunrise and sunset in August in Rio Grande City?

On the first day of August, sunrise is at 7:01 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:55 pm CDT.

How many hours of sunshine does Rio Grande City have in August?

In August, the average sunshine duration is 9.7h.

When is the highest UV index in Rio Grande City?

July and August, with an average maximum UV index of 8, are months with the highest UV index in Rio Grande City, Texas.

What is the UV index reading in August in Rio Grande City?

The average daily maximum UV index in August in Rio Grande City, Texas, is 8. A UV Index value of 8 to 10 symbolizes a very high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Rio Grande City, TX

Average temperature in August - Rio Grande City, TX
  • Average high temperature in August: 100°F

The warmest month (with the highest average high temperature) is August (100°F).
The month with the lowest average high temperature is January (69.8°F).

  • Average low temperature in August: 80.1°F

The month with the highest average low temperature is August (80.1°F).
The coldest month (with the lowest average low temperature) is January (52.7°F).

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Average pressure in August
Rio Grande City, TX

Average pressure in August - Rio Grande City, TX
  • Average pressure in August: 29.9"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).

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Average wind speed in August
Rio Grande City, TX

Average wind speed in August - Rio Grande City, TX
  • Average wind speed in August: 12.4mph

The windiest month (with the highest average wind speed) is July (13.9mph).
The calmest month (with the lowest average wind speed) is December (9.2mph).

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Average humidity in August
Rio Grande City, TX

Average humidity in August - Rio Grande City, TX
  • Average humidity in August: 53%

The month with the highest relative humidity is December (65%).
The month with the lowest relative humidity is August (53%).

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Average rainfall in August
Rio Grande City, TX

Average rainfall in August - Rio Grande City, TX
  • Average rainfall in August: 0.63"

The wettest month (with the highest rainfall) is September (2.56").
The driest month (with the least rainfall) is February (0.47").

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Average rainfall days in August
Rio Grande City, TX

Average rainfall days in August - Rio Grande City, TX
  • Average rainfall days in August: 6.9 days

The month with the highest number of rainy days is September (15.3 days).
The month with the least rainy days is February (5.8 days).

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Average snowfall days in August
Rio Grande City, TX

Average snowfall days in August - Rio Grande City, TX
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in August /
Average sunshine in August
Rio Grande City, TX

Average daylight in August / Average sunshine in August - Rio Grande City, TX
  • Average daylight in August: 13h and 0min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in August: 9h and 4min

The months with the most sunshine are June and July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in August
Rio Grande City, TX

Average sunshine days in August - Rio Grande City, TX
  • Average sunshine days in August: 22.6 days

The months with the most sunshine days are July and August (22.6 days).
The month with the least sunshine days is September (12.9 days).

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Average UV index in August
Rio Grande City, TX

Average UV index in August - Rio Grande City, TX
  • Average UV index in August: 8

The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 4).

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Average cloud cover in August
Rio Grande City, TX

Average cloud cover in August - Rio Grande City, TX
  • Average cloud cover in August: 16

The month with the most cloud cover is December (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in August
Rio Grande City, TX

Average visibility in August - Rio Grande City, 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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Rio Grande City, Texas, USA

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