Castaic, CA Weather


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The most pleasant months of the year for Castaic are May, October and June. In Castaic, there are 5 comfortable months with high temperatures in the range of 70-85°. August is the hottest month for Castaic with an average high temperature of 91.4°, which ranks it as about average compared to other places in California. Any measurable snowfall is a rare occurance in Castaic. Days with noticeable humidity are rare throughout the year.

Today's Weather - Castaic, CA

5 PM PST

Sunny

59°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
This AfternoonSunny61° / 42°NNW 20 mph
MondaySunny70° / 46°NW 5 to 15 mph
TuesdaySunny76° / 49°NW 15 mph
WednesdaySunny79° / 51°NNE 10 to 20 mph
ThursdaySunny78° / 52°ESE 10 to 15 mph
FridaySunny80° / 53°ESE 5 to 15 mph
SaturdaySunny80° / 53°SSW 5 to 15 mph

Weather Highlights

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 the Castaic area is 8.8 (10=best), which means it is more comfortable than most places in California.

8.8 / 10

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7.8. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.


Average Monthly High and Low (°F)
HighLow
January65° 46°
February66° 46°
March69° 48°
April73° 50°
May78° 54°
June83° 57°
July90° 62°
August91° 63°
September88° 62°
October79° 56°
November71° 50°
December64° 46°
Hot, Freezing, Rainy, Snowy Days: Castaic
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January0060
February0060
March0050
April2030
May4010
June6010
July16000
August18000
September13010
October5030
November1030
December0050

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

Reviews for Castaic
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Over 8 years ago

I've lived in northern Castaic for 14 years so this review is for northern Castaic Pros: convenient freeway access, boating on Lake Castaic, lots of gas stations,  More

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Over 10 years ago

Formerly a "truck stop" town, Castaic is the last town before going over the Grapevine, heading North on I-5 towards San Francisco. The town is unincorporated and sits  More

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Over 11 years ago

I currently live in Valencia. Before I consider purchasing a house in Castaic off Lake Hughes Rd and closer to the lake, is it safe to live in this neighborhood? Any  More

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