nomadseason

September Weather in Del Rio, United States

Last updated: June 24, 2025

In September, the average temperature in Del Rio, United States is a pleasant 23°C (74°F). Temperatures can range from a cool 10°C (50°F) to a scorching 41°C (107°F). Expect minimal rainfall, with only 2 mm (0.1 in) of precipitation spread across 0 days. Overall, the climate boasts an average humidity of 55%, making it an ideal time to explore the region!

September Temperature in Del Rio

In September in Del Rio, the average temperature is 23°C (74°F). The maximum can reach 41°C (107°F), while the minimum can drop to as low as 10°C (50°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Del Rio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Del Rio, September typically has an average temperature of 23°C (74°F), with highs reaching up to 41°C (107°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec505256636977797874655549
Data source: Temperature data for Del Rio generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Del Rio

In Del Rio in September, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.

September Precipitation Trends in Del Rio

The chart displays monthly precipitation patterns in Del Rio, 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 Del Rio, September typically receives around 2 mm (0.1 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec99788737212002214190
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Del Rio

In Del Rio in September humidity is 55%. With an average temperature of 23°C (74°F), this humidity feels like a warm embrace, creating a comfortable atmosphere for exploring the sights and indulging in outdoor activities.

September Average Humidity in Del Rio

This chart illustrates the average monthly humidity levels in Del Rio, 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 Del Rio is approximately 55%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Del Rio

In Del Rio in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Del Rio.

Maximum UV Index Levels in Del Rio for September

The chart shows the monthly maximum UV Index (UVI) for Del Rio 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 Del Rio typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589101111109743
Data source: Del Rio 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 Del Rio Compares to Other Months

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

This table compares monthly weather conditions in Del Rio, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)99 mm (3.9 inches)82%moderate
February Weather11°C (52°F)78 mm (3.1 inches)84%moderate
March Weather13°C (57°F)87 mm (3.4 inches)82%very high
April Weather17°C (63°F)37 mm (1.5 inches)78%very high
May Weather21°C (70°F)21 mm (0.8 inches)71%very high
June Weather25°C (77°F)2 mm (0.1 inches)64%extreme
July Weather26°C (80°F)0 mm (0.0 inches)58%extreme
August Weather26°C (78°F)0 mm (0.0 inches)54%very high
September Weather23°C (74°F)2 mm (0.1 inches)55%very high
October Weather18°C (65°F)21 mm (0.8 inches)62%high
November Weather13°C (56°F)41 mm (1.6 inches)78%moderate
December Weather10°C (50°F)90 mm (3.5 inches)80%moderate

Compare Del Rio's Climate with Cities Worldwide