What is today's weather forecast for Castaic, CA?

Today's forecast for Castaic shows a low of 53 degrees Fahrenheit. Mostly cloudy, then gradually becoming clear, with a low around 53.

What is the 7-day weather forecast for Castaic, CA?

The 7-day forecast for Castaic shows highs from 61 to 74 degrees and lows from 44 to 53 degrees Fahrenheit. Expect precipitation on 1 day with chances of 20% or higher.

Will it rain in Castaic, CA this week?

Yes, rain is possible in Castaic this week. Precipitation chances: Wednesday (50% chance).

How accurate is the Castaic weather forecast?

WeatherForYou provides highly accurate Castaic forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Castaic, CA Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Switch to Metric Units

65°F
Feels Like 65°F

Humidity 37% Dew Point 39°F Wind W 1 MPH Gusts 2 Barometer N/A

Report from a MADIS/MESONET weather station 0.3 mi. N of central Castaic
at 5:50 PM Thu, Nov 27, 2025

Point Forecast at a Glance

ThuNov 27

FriNov 28

SatNov 29

SunNov 30

MonDec 1

TueDec 2

WedDec 3

50%

7-Day Temperature Trend

Week Ahead Summary

Cooling trend continues with high temperatures dropping from 74°F to 61°F. Mostly dry conditions with only one day showing rain chances.

Climate Context

Temperatures are expected to be near normal for this time of year, with highs around 66°F and lows around 45°F.

This Date in Weather History

1988 - Snow and high winds created blizzard conditions in Minnesota. Winds gusted to 63 mph at Windom, and snowfall totals ranged up to 14 inches at Aitkin. Snow drifts seven feet high closed many roads. Fargo ND reported a wind chill reading of 34 degrees below zero.

Castaic, CA 7 Day Weather Forecast Details

Thursday Nov 27

Night: Mostly cloudy, then gradually becoming clear, with a low around 53. North wind 5 to 10 mph.

Friday Nov 28

Day: Sunny, with a high near 74. Calm wind becoming southwest around 5 mph in the morning.

Night: Clear, with a low around 45. North wind around 5 mph.

Saturday Nov 29

Day: Sunny, with a high near 72. North northeast wind around 5 mph.

Night: Clear, with a low around 45. North wind around 5 mph.

Sunday Nov 30

Day: Sunny, with a high near 68.

Night: Mostly clear, with a low around 45.

Monday Dec 1

Day: Sunny, with a high near 67.

Night: Clear, with a low around 44.

Tuesday Dec 2

Day: Sunny, with a high near 68.

Night: Mostly clear, with a low around 44.

Wednesday Dec 3

Day: A slight chance of showers. Mostly sunny, with a high near 61.

Night: A slight chance of showers. Partly cloudy, with a low around 44.

Thursday Dec 4

Day: Mostly sunny, with a high near 62.

About Castaic, CA

Castaic ( ) (Chumash: Kaštiq; Spanish: Castéc) is an unincorporated community and census-designated place (CDP) in northwestern Los Angeles County, California, United States. As of the 2020 census it had a population of 18,937. Tens of thousands of motorists pass through Castaic daily as they drive to or from Los Angeles on Interstate 5 (the Golden State Freeway). Castaic Lake is part of the California Water Project and is the site of a hydro-electric power plant. Castaic is 38 miles (61 km) northwest of Los Angeles Union Station and northwest of the city of Santa Clarita. The Castaic Range War went on for decades in the late 19th and early 20th centuries resulting in dozens of deaths before hostilities ceased in 1916.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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