April Weather in Castle Hills, United States

Last updated: June 24, 2025

In Castle Hills, United States, the average temperature in April hovers around 21°C (70°F), with minimums dipping to 3°C (37°F) and maximums soaring to 35°C (95°F). During this month, expect 71 mm (2.8 in) of precipitation over 8 days, and prepare for a notable average humidity of 76%.

April Temperature in Castle Hills

In April in Castle Hills, the average temperature is 21°C (70°F), with maximums reaching 35°C (95°F) and minimums dropping to as low as 3°C (37°F). This makes Castle Hills an ideal travel destination for those who enjoy warm days and cool nights.

April Weather in Castle Hills: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Castle Hills, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castle Hills, 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 (37°F).

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

April Precipitation in Castle Hills

In Castle Hills in April, the precipitation amount is 71 mm (2.8 in) over the course of 8 days.

April Precipitation Trends in Castle Hills

The chart displays monthly precipitation patterns in Castle Hills, 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 Castle Hills, April typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 8 days.

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

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Millimeters (mm) Inches (in)

April Humidity in Castle Hills

In Castle Hills in April, humidity is 76%. With an average temperature of 21°C (70°F), this humidity feels like a warm, muggy embrace that can make outdoor activities feel more strenuous, prompting travelers to take frequent breaks and seek shade to stay comfortable during their adventures.

April Average Humidity in Castle Hills

This chart illustrates the average monthly humidity levels in Castle Hills, 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 Castle Hills is approximately 76%, 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 Castle Hills

In Castle Hills 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 Castle Hills.

Maximum UV Index Levels in Castle Hills for April

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

Data source: Castle Hills 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 Castle Hills Compares to Other Months

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

This table compares monthly weather conditions in Castle Hills, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (53°F)	44 mm (1.7 inches)	79%	moderate
February Weather	13°C (55°F)	58 mm (2.3 inches)	79%	very high
March Weather	18°C (65°F)	62 mm (2.5 inches)	74%	very high
April Weather	21°C (70°F)	71 mm (2.8 inches)	76%	extreme
May Weather	25°C (77°F)	130 mm (5.1 inches)	81%	extreme
June Weather	28°C (83°F)	78 mm (3.1 inches)	76%	extreme
July Weather	29°C (85°F)	69 mm (2.7 inches)	66%	extreme
August Weather	30°C (86°F)	56 mm (2.2 inches)	58%	extreme
September Weather	27°C (80°F)	117 mm (4.6 inches)	65%	extreme
October Weather	22°C (72°F)	89 mm (3.5 inches)	74%	very high
November Weather	16°C (61°F)	46 mm (1.8 inches)	81%	high
December Weather	13°C (56°F)	57 mm (2.3 inches)	86%	moderate