September Weather in Dilley, United States

Last updated: June 24, 2025

In September, the average temperature in Dilley, United States reaches a warm 28°C (84°F), with a minimum of 14°C (58°F) and a scorching maximum of 41°C (105°F). Prepare for 107 mm (4.2 in) of precipitation spread over 8 days, while enjoying an average humidity level of 65%. Whether you’re exploring or relaxing, make sure to stay hydrated!

September Temperature in Dilley

In September in Dilley, the average temperature is 28°C (84°F). Maximum temperatures can reach 41°C (105°F), while the minimum can drop to as low as 14°C (58°F). Travelers should be prepared for warm days and cooler evenings, making it essential to pack accordingly.

September Weather in Dilley: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Dilley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dilley, September typically has an average temperature of 28°C (84°F), with highs reaching up to 41°C (105°F) and lows dropping to around 14°C (58°F).

Data source: Temperature data for Dilley generated using information from the Copernicus Climate Change Service.

September Precipitation in Dilley

In Dilley in September, the total precipitation amount is 107 mm (4.2 in), occurring over a span of 8 days.

September Precipitation Trends in Dilley

The chart displays monthly precipitation patterns in Dilley, 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 Dilley, September typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Dilley

In Dilley in September humidity is 65%. With an average temperature of 28°C (84°F), this humidity feels like walking through a warm, wet blanket, making travel a bit uncomfortable and requiring frequent breaks to stay refreshed.

September Average Humidity in Dilley

This chart illustrates the average monthly humidity levels in Dilley, 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 Dilley is approximately 65%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Dilley

In Dilley 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 Dilley.

Maximum UV Index Levels in Dilley for September

The chart shows the monthly maximum UV Index (UVI) for Dilley 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 Dilley typically reaches 11, which falls under the extreme exposure category.

Data source: Dilley 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 Dilley Compares to Other Months

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

This table compares monthly weather conditions in Dilley, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	25 mm (1.0 inches)	79%	moderate
February Weather	15°C (59°F)	32 mm (1.3 inches)	79%	very high
March Weather	20°C (69°F)	34 mm (1.3 inches)	74%	very high
April Weather	23°C (74°F)	49 mm (1.9 inches)	76%	extreme
May Weather	27°C (81°F)	104 mm (4.1 inches)	81%	extreme
June Weather	30°C (86°F)	47 mm (1.8 inches)	76%	extreme
July Weather	31°C (88°F)	53 mm (2.1 inches)	66%	extreme
August Weather	32°C (89°F)	35 mm (1.4 inches)	58%	extreme
September Weather	28°C (84°F)	107 mm (4.2 inches)	65%	extreme
October Weather	24°C (75°F)	60 mm (2.4 inches)	74%	very high
November Weather	18°C (64°F)	35 mm (1.4 inches)	81%	high
December Weather	15°C (59°F)	28 mm (1.1 inches)	86%	moderate