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September Weather in Rio Bravo, United States

Last updated: June 24, 2025

In September, the average temperature in Rio Bravo, United States hovers around 29°C (85°F), offering a warm embrace to its visitors. Expect a minimum temperature of 17°C (62°F) and the heat can soar to a sweltering 41°C (105°F). With an average humidity of 73%, the air retains some stickiness, complementing the 92 mm (3.6 in) of precipitation spread over 10 days. Perfect your packing to enjoy all that this locale has to offer!

September Temperature in Rio Bravo

In September in Rio Bravo, the average temperature is 29°C (85°F). Maximums can reach 41°C (105°F), and minimums can be as low as 17°C (62°F). This makes it an ideal time for travelers who enjoy warm weather and want to experience the vibrant local culture.

September Weather in Rio Bravo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Rio Bravo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Bravo, September typically has an average temperature of 29°C (85°F), with highs reaching up to 41°C (105°F) and lows dropping to around 17°C (62°F).
JanFebMarAprMayJunJulAugSepOctNovDec596472778387899085776862
Data source: Temperature data for Rio Bravo 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.

September Precipitation in Rio Bravo

In Rio Bravo in September, the total precipitation amount is 92 mm (3.6 in), which falls over the course of 10 days.

September Precipitation Trends in Rio Bravo

The chart displays monthly precipitation patterns in Rio Bravo, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Rio Bravo, September typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec171532458242542592422319
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rio Bravo

In Rio Bravo in September, humidity is 73%. With an average temperature of 29°C (85°F), this humidity feels like a warm blanket enveloping you, making outdoor activities quite uncomfortable and sticky for traveling.

September Average Humidity in Rio Bravo

This chart illustrates the average monthly humidity levels in Rio Bravo, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Rio Bravo is approximately 73%, 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 September generated using information from the Copernicus Climate Change Service.

September UV Index in Rio Bravo

In Rio Bravo in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Rio Bravo.

Maximum UV Index Levels in Rio Bravo for September

The chart shows the monthly maximum UV Index (UVI) for Rio Bravo in September, 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 September, the maximum UV index in Rio Bravo typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6810111212121211975
Data source: Rio Bravo September 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 September Weather in Rio Bravo Compares to Other Months

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

This table compares monthly weather conditions in Rio Bravo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (60°F)17 mm (0.7 inches)83%high
February Weather18°C (64°F)15 mm (0.6 inches)79%very high
March Weather22°C (73°F)32 mm (1.3 inches)76%very high
April Weather25°C (78°F)45 mm (1.8 inches)77%extreme
May Weather29°C (84°F)82 mm (3.2 inches)80%extreme
June Weather31°C (88°F)42 mm (1.6 inches)73%extreme
July Weather32°C (89°F)54 mm (2.1 inches)66%extreme
August Weather32°C (90°F)25 mm (1.0 inches)65%extreme
September Weather29°C (85°F)92 mm (3.6 inches)73%extreme
October Weather25°C (77°F)42 mm (1.7 inches)76%very high
November Weather20°C (68°F)23 mm (0.9 inches)80%high
December Weather17°C (63°F)19 mm (0.7 inches)86%moderate

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