August Weather in Katy, United States

Last updated: June 24, 2025

In August, the average temperature in Katy, United States is a warm 29°C (85°F), with minimums dipping to 22°C (71°F) and maximums soaring up to 39°C (102°F). Expect a precipitation total of 167 mm (6.6 in) spread across 16 days, contributing to an average humidity of 68%. Get ready for a mix of sunshine and occasional rain!

August Temperature in Katy

In August in Katy, the average temperature is 29°C (85°F). Maximums can reach 39°C (102°F), and minimums can be as low as 22°C (71°F). It's an ideal time to enjoy outdoor activities and explore the vibrant culture while staying hydrated and sun-protected.

August Weather in Katy: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Katy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Katy, August typically has an average temperature of 29°C (85°F), with highs reaching up to 39°C (102°F) and lows dropping to around 22°C (71°F).

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

August Precipitation in Katy

In Katy in August, the precipitation amount is 167 mm (6.6 in) occurring over a span of 16 days.

August Precipitation Trends in Katy

The chart displays monthly precipitation patterns in Katy, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Katy, August typically receives around 167 mm (6.6 inches) of precipitation spread over approximately 16 days.

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

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Millimeters (mm) Inches (in)

August Humidity in Katy

In Katy in August, humidity is 68%. With an average temperature of 29°C (85°F), this humidity feels like a thick blanket enveloping you, making traveling feel oppressive and heavy, forcing you to seek shade and stay hydrated frequently.

August Average Humidity in Katy

This chart illustrates the average monthly humidity levels in Katy, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Katy is approximately 68%, offering insight into how humid the weather typically is during this month.

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

August UV Index in Katy

In Katy in August, 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 Katy.

Maximum UV Index Levels in Katy for August

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

Data source: Katy August 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 August Weather in Katy Compares to Other Months

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

This table compares monthly weather conditions in Katy, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (55°F)	81 mm (3.2 inches)	78%	moderate
February Weather	14°C (58°F)	92 mm (3.6 inches)	81%	very high
March Weather	19°C (66°F)	72 mm (2.8 inches)	76%	very high
April Weather	21°C (70°F)	80 mm (3.1 inches)	79%	extreme
May Weather	25°C (78°F)	165 mm (6.5 inches)	79%	extreme
June Weather	28°C (83°F)	156 mm (6.1 inches)	74%	extreme
July Weather	29°C (84°F)	125 mm (4.9 inches)	71%	extreme
August Weather	29°C (85°F)	167 mm (6.6 inches)	68%	extreme
September Weather	27°C (80°F)	157 mm (6.2 inches)	73%	very high
October Weather	22°C (72°F)	92 mm (3.6 inches)	75%	very high
November Weather	17°C (63°F)	75 mm (3.0 inches)	78%	high
December Weather	14°C (58°F)	106 mm (4.2 inches)	84%	moderate