July Weather in Katy, United States

Last updated: June 24, 2025

In July, the average temperature in Katy, United States soars to 29°C (84°F), with peaks hitting a sweltering 40°C (104°F) and dips as low as 20°C (69°F). Expect 125 mm (4.9 in) of precipitation spread over 15 days, accompanied by an average humidity of 71%. Get ready for a season where warmth meets refreshing showers!

July Temperature in Katy

In July in Katy, the average temperature is 29°C (84°F). Maximum temperatures can reach 40°C (104°F), while minimums can drop to as low as 20°C (69°F). Be sure to pack light clothing and stay hydrated to make the most of your travels during this warm month.

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

The chart illustrates July 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, July typically has an average temperature of 29°C (84°F), with highs reaching up to 40°C (104°F) and lows dropping to around 20°C (69°F).

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

July Precipitation in Katy

In Katy in July, the precipitation amount is 125 mm (4.9 in) over a span of 15 days.

July Precipitation Trends in Katy

The chart displays monthly precipitation patterns in Katy, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Katy, July typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 15 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Katy

In Katy in July, humidity is 71%. With an average temperature of 29°C (84°F), this humidity feels like a warm, heavy blanket enveloping you, making traveling quite uncomfortable as the air clings to your skin and requires frequent breaks to stay hydrated.

July Average Humidity in Katy

This chart illustrates the average monthly humidity levels in Katy, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Katy is approximately 71%, offering insight into how humid the weather typically is during this month.

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

July UV Index in Katy

In Katy in July, 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 July

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

Data source: Katy July 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 July 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 July’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 July’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