September Weather in Waller, United States

Last updated: June 24, 2025

In September, the average temperature in Waller, United States is a warm 27°C (80°F). However, you can expect a range, with minimums dipping to 12°C (54°F) and soaring highs of 39°C (102°F). Additionally, prepare for some rain, as 134 mm (5.3 in) of precipitation typically falls over 14 days. With an average humidity of 73%, the atmosphere can feel quite sticky, making it essential to stay hydrated and cool!

September Temperature in Waller

In September in Waller, the average temperature is 27°C (80°F). Maximums can reach 39°C (102°F) and minimums can be as low as 12°C (54°F). Travelers should be prepared for a mix of warm days and cooler evenings while enjoying the vibrant atmosphere of Waller.

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

The chart illustrates September temperature patterns in Waller, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waller, September typically has an average temperature of 27°C (80°F), with highs reaching up to 39°C (102°F) and lows dropping to around 12°C (54°F).

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

September Precipitation in Waller

In Waller in September, the total precipitation amount is 134 mm (5.3 in) over the course of 14 days.

September Precipitation Trends in Waller

The chart displays monthly precipitation patterns in Waller, 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 Waller, September typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 14 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 Waller

In Waller in September humidity is 73%. With an average temperature of 27°C (80°F), this humidity feels like a warm, enveloping blanket that can make traveling feel sticky and slightly uncomfortable, prompting frequent breaks in the shade and plenty of hydration.

September Average Humidity in Waller

This chart illustrates the average monthly humidity levels in Waller, 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 Waller is approximately 73%, 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 Waller

In Waller 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 Waller.

Maximum UV Index Levels in Waller for September

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

Data source: Waller 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 Waller Compares to Other Months

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

This table compares monthly weather conditions in Waller, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (54°F)	75 mm (3.0 inches)	78%	moderate
February Weather	13°C (57°F)	95 mm (3.7 inches)	81%	very high
March Weather	18°C (65°F)	70 mm (2.7 inches)	76%	very high
April Weather	21°C (70°F)	83 mm (3.3 inches)	79%	extreme
May Weather	25°C (78°F)	177 mm (7.0 inches)	79%	extreme
June Weather	28°C (82°F)	139 mm (5.5 inches)	74%	extreme
July Weather	29°C (84°F)	110 mm (4.3 inches)	71%	extreme
August Weather	29°C (85°F)	149 mm (5.9 inches)	68%	extreme
September Weather	27°C (80°F)	134 mm (5.3 inches)	73%	extreme
October Weather	22°C (72°F)	90 mm (3.5 inches)	75%	very high
November Weather	17°C (62°F)	70 mm (2.8 inches)	78%	high
December Weather	14°C (57°F)	107 mm (4.2 inches)	84%	moderate