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August Weather in Rio Grande City, United States

Last updated: June 24, 2025

In August, the average temperature in Rio Grande City, United States reaches a sizzling 31°C (89°F), with minimums dipping to 23°C (74°F) and soaring as high as 42°C (108°F). Expect 16 mm (0.6 in) of precipitation spread over 4 days, all while enjoying an average humidity of 65%. Get ready for a warm and humid experience!

August Temperature in Rio Grande City

In August in Rio Grande City, the average temperature is 31°C (89°F), with maximums reaching up to 42°C (108°F) and minimums dropping as low as 23°C (74°F). Pack accordingly to enjoy your trip, as the weather can be both hot and pleasant during this time.

August Weather in Rio Grande City: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Rio Grande City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Grande City, August typically has an average temperature of 31°C (89°F), with highs reaching up to 42°C (108°F) and lows dropping to around 23°C (74°F).
JanFebMarAprMayJunJulAugSepOctNovDec616572788386878884776863
Data source: Temperature data for Rio Grande City generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Rio Grande City

In Rio Grande City in August, the precipitation amount is 16 mm (0.6 in) over a span of 4 days.

August Precipitation Trends in Rio Grande City

The chart displays monthly precipitation patterns in Rio Grande City, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Rio Grande City, August typically receives around 16 mm (0.6 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec181829327879731697383721
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Rio Grande City

In Rio Grande City in August, humidity is 65%. With an average temperature of 31°C (89°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and prompting you to seek shade and refreshing drinks while exploring the sights.

August Average Humidity in Rio Grande City

This chart illustrates the average monthly humidity levels in Rio Grande City, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Rio Grande City is approximately 65%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%79%76%77%80%73%66%65%73%76%80%86%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Rio Grande City

In Rio Grande City in August, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Rio Grande City.

Maximum UV Index Levels in Rio Grande City for August

The chart shows the monthly maximum UV Index (UVI) for Rio Grande City in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Rio Grande City typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6910111212121211976
Data source: Rio Grande City August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How August Weather in Rio Grande City Compares to Other Months

Weather in Rio Grande City varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Rio Grande City, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Rio Grande City, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (61°F)18 mm (0.7 inches)83%high
February Weather18°C (65°F)18 mm (0.7 inches)79%very high
March Weather22°C (72°F)29 mm (1.1 inches)76%very high
April Weather25°C (78°F)32 mm (1.3 inches)77%extreme
May Weather28°C (83°F)77 mm (3.0 inches)80%extreme
June Weather30°C (86°F)79 mm (3.1 inches)73%extreme
July Weather30°C (87°F)73 mm (2.9 inches)66%extreme
August Weather31°C (89°F)16 mm (0.6 inches)65%extreme
September Weather29°C (84°F)97 mm (3.8 inches)73%extreme
October Weather25°C (77°F)37 mm (1.5 inches)76%very high
November Weather20°C (69°F)37 mm (1.5 inches)80%high
December Weather17°C (64°F)20 mm (0.8 inches)86%high

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