June Weather in Castaic, United States

Last updated: June 24, 2025

In Castaic, United States, the average temperature in June hovers around 22°C (72°F). Expect a minimum of 10°C (50°F) and a maximum that can soar to 41°C (106°F). With just 3 mm (0.1 in) of precipitation over 0 days, you can enjoy a predominantly dry month. Additionally, the air remains comfortably humid, with an average humidity of 52%.

June Temperature in Castaic

In June in Castaic, the average temperature is 22°C (72°F), with maximums that can reach 41°C (106°F) and minimums that can dip to as low as 10°C (50°F). This makes it an ideal destination for travelers seeking warm weather with the possibility of cooler evenings.

June Weather in Castaic: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Castaic, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castaic, June typically has an average temperature of 22°C (72°F), with highs reaching up to 41°C (106°F) and lows dropping to around 10°C (50°F).

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

June Precipitation in Castaic

In Castaic in June, the precipitation amount is 3 mm (0.1 in) during a total of 0 days.

June Precipitation Trends in Castaic

The chart displays monthly precipitation patterns in Castaic, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Castaic, June typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 0 days.

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

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Millimeters (mm) Inches (in)

June Humidity in Castaic

In Castaic in June humidity is 52%. With an average temperature of 22°C (72°F), this humidity feels like a refreshing embrace during your travels, creating a pleasant sensation that makes outdoor activities enjoyable and inviting.

June Average Humidity in Castaic

This chart illustrates the average monthly humidity levels in Castaic, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Castaic is approximately 52%, offering insight into how humid the weather typically is during this month.

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

June UV Index in Castaic

In Castaic in June, 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 Castaic.

Maximum UV Index Levels in Castaic for June

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

Data source: Castaic June 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 June Weather in Castaic Compares to Other Months

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

This table compares monthly weather conditions in Castaic, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (51°F)	63 mm (2.5 inches)	78%	moderate
February Weather	11°C (52°F)	55 mm (2.2 inches)	82%	high
March Weather	12°C (55°F)	71 mm (2.8 inches)	75%	very high
April Weather	16°C (62°F)	22 mm (0.9 inches)	68%	very high
May Weather	18°C (65°F)	16 mm (0.6 inches)	57%	extreme
June Weather	22°C (72°F)	3 mm (0.1 inches)	52%	extreme
July Weather	25°C (78°F)	1 mm (0.1 inches)	46%	extreme
August Weather	26°C (78°F)	2 mm (0.1 inches)	39%	extreme
September Weather	23°C (74°F)	4 mm (0.2 inches)	48%	very high
October Weather	19°C (66°F)	9 mm (0.3 inches)	59%	high
November Weather	15°C (59°F)	19 mm (0.7 inches)	72%	moderate
December Weather	10°C (51°F)	68 mm (2.7 inches)	76%	moderate