April Weather in Katy, United States

Last updated: June 24, 2025

In April, the average temperature in Katy, United States hovers around 21°C (70°F). Expect a minimum chill of 3°C (38°F), contrasting with the occasional highs reaching 35°C (95°F). Throughout the month, you can anticipate approximately 80 mm (3.1 in) of rainfall spread over 11 days. The air will feel quite humid, with an average humidity level of 79%.

April Temperature in Katy

In April in Katy, the average temperature is 21°C (70°F). Maximums can reach 35°C (95°F) and minimums can be as low as 3°C (38°F). Be prepared for warm days and cool evenings while enjoying your travels!

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

The chart illustrates April 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, April typically has an average temperature of 21°C (70°F), with highs reaching up to 35°C (95°F) and lows dropping to around 3°C (38°F).

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

April Precipitation in Katy

In Katy in April, the precipitation amount is 80 mm (3.1 in) spread over a duration of 11 days.

April Precipitation Trends in Katy

The chart displays monthly precipitation patterns in Katy, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Katy, April typically receives around 80 mm (3.1 inches) of precipitation spread over approximately 11 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Katy

In Katy in April humidity is 79%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making outdoor exploration a bit sticky but still enjoyable for travelers who appreciate the lush, vibrant atmosphere.

April Average Humidity in Katy

This chart illustrates the average monthly humidity levels in Katy, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Katy is approximately 79%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Katy

In Katy in April, 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 April

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

Data source: Katy April 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 April 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 April’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 April’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