Castaic, California gets 18 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Castaic averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 283 sunny days per year in Castaic. The US average is 205 sunny days.
Castaic gets some kind of precipitation, on average, 34 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Summer High: the July high is around 90 degrees
Winter Low: the January low is 46
Rain: averages 18 inches of rain a year
Snow: averages 0 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Castaic is 8.9 (10=best), which means it is more comfortable than most places in California.
8.9 / 10
October, June and May are the most pleasant months in Castaic, while January and February are the least comfortable months.