September Weather in Balmorhea, United States

Last updated: June 24, 2025

In Balmorhea, United States, the average temperature in September hovers around 25°C (77°F). However, temperatures can vary significantly, with a low of 8°C (47°F) and a high of 38°C (101°F). Visitors can expect an average precipitation of 58 mm (2.3 in) over 8 days, alongside a humidity level of 74%. Prepare accordingly for the diverse weather conditions!

September Temperature in Balmorhea

In September in Balmorhea, the average temperature is 25°C (77°F). The maximum can reach 38°C (101°F), and the minimum can be as low as 8°C (47°F). This diverse range of temperatures makes Balmorhea an ideal destination for travelers seeking both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Balmorhea, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Balmorhea, September typically has an average temperature of 25°C (77°F), with highs reaching up to 38°C (101°F) and lows dropping to around 8°C (47°F).

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

September Precipitation in Balmorhea

In Balmorhea in September, the precipitation amount is 58 mm (2.3 in) over a span of 8 days.

September Precipitation Trends in Balmorhea

The chart displays monthly precipitation patterns in Balmorhea, 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 Balmorhea, September typically receives around 58 mm (2.3 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 Balmorhea

In Balmorhea in September humidity is 74%. With an average temperature of 25°C (77°F), this humidity feels like a warm, muggy blanket wrapping around you, making travel a bit more challenging as you find yourself sticky and in need of frequent breaks to hydrate and cool down.

September Average Humidity in Balmorhea

This chart illustrates the average monthly humidity levels in Balmorhea, 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 Balmorhea is approximately 74%, 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 Balmorhea

In Balmorhea 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 Balmorhea.

Maximum UV Index Levels in Balmorhea for September

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

Data source: Balmorhea 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 Balmorhea Compares to Other Months

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

This table compares monthly weather conditions in Balmorhea, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	10 mm (0.4 inches)	76%	moderate
February Weather	11°C (53°F)	8 mm (0.3 inches)	74%	very high
March Weather	17°C (62°F)	15 mm (0.6 inches)	63%	very high
April Weather	21°C (69°F)	17 mm (0.7 inches)	61%	extreme
May Weather	26°C (78°F)	25 mm (1.0 inches)	68%	extreme
June Weather	29°C (85°F)	34 mm (1.3 inches)	70%	extreme
July Weather	29°C (85°F)	25 mm (1.0 inches)	70%	extreme
August Weather	29°C (84°F)	39 mm (1.5 inches)	67%	extreme
September Weather	25°C (77°F)	58 mm (2.3 inches)	74%	extreme
October Weather	20°C (68°F)	28 mm (1.1 inches)	75%	very high
November Weather	14°C (58°F)	11 mm (0.4 inches)	84%	high
December Weather	11°C (51°F)	15 mm (0.6 inches)	85%	moderate