Weather Forecast and Radar for Castaic, California

Weather in Castaic, CA

Castaic, California, United States typically has mild weather year-round. During the summer months, temperatures typically range from the low 70s (Fahrenheit) to the high 90s. During the winter, temperatures typically range from the high 40s to the low 70s. The warmest months in Castaic are usually June, July, and August, with average highs of 94°F, 95°F, and 94°F, respectively. The coldest months are usually December, January, and February, with average lows of 41°F, 43°F, and 43°F, respectively.

Rainfall in Castaic is fairly consistent year-round, with the most precipitation occurring between November and March. The average annual rainfall is around 16.5 inches. Snowfall is rare in Castaic, but it can occasionally occur during the winter months.

The humidity in Castaic is usually quite low, with average humidity levels ranging from 40%-60%. The sun shines on average around 260 days a year in Castaic, so it's typically quite sunny throughout the year.

Fast Facts About Castaic, CA

As of 2020, the city population is 18479.

Major Cities Nearby Castaic, CA

This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Castaic, California.