Weather forecast for todayCastaic, CA

Weather forecast for today

Current condition 2:53 am PDT

  • 57°F
  • Feels like:
    57°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 5mphN 0°
  • Humidity: 57%
  • Dewpoint: 43°F
  • Pressure: 29.86"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
In Castaic, at the moment, the atmosphere is fresh and open, with clear skies above.
The temperature is a moderate 57.2°F. The current temperature is near the lowest anticipated 55.4°F for today.

Tuesday Oct 20, 2026

  • 81°F
  • 55°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 14mphSE 139°
  • Humidity: 41%
  • UV index: 6
  • Sunrise: 7:04 am PDT
  • Sunset: 6:14 pm PDT
  • ▼
Today, on Tuesday, October 20, sunny and dry conditions are anticipated.
Forecasted temperature values will span from a temperate 80.6°F down to a refreshing 55.4°F.
The maximum heat index, which factors the actual air temperature with the relative humidity, is evaluated at 80.6°F.
The daily maximum temperature is predicted to be moderately higher than October's climate average of 76.6°F.
Sunrise will be at 7:04 am and sunset at 6:14 pm; the daylight will last for 11h and 10min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 79°C.
Coldest period: 3 am - 6 am 59°C.

Chance of precipitation

Highest chance: 12 am 7%.

Hourly weather forecast

  • 4 am
  • 59°F
  • Feels like:
    59°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNNE 12°
  • Humidity: 56%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 59°F
  • Feels like:
    59°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNNE 15°
  • Humidity: 56%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:04 am
  • 8 am
  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNNE 26°
  • Humidity: 52%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 72°F
  • Feels like:
    72°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphESE 116°
  • Humidity: 39%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 12 pm
  • 77°F
  • Feels like:
    77°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphSSE 157°
  • Humidity: 36%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 2 pm
  • 79°F
  • Feels like:
    79°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 14mphSSE 157°
  • Humidity: 33%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 4 pm
  • 79°F
  • Feels like:
    79°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 14mphSSE 164°
  • Humidity: 34%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 6 pm
  • 72°F
  • Feels like:
    72°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 11mphSSW 198°
  • Humidity: 49%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:14 pm
  • 8 pm
  • 66°F
  • Feels like:
    66°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphSSW 212°
  • Humidity: 67%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 63°F
  • Feels like:
    63°F
Clear
Clear
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 4mphNW 304°
  • Humidity: 75%
  • Pressure: 29.88"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
Today, in Castaic, primarily bright and sunny weather is anticipated.
The temperature will be between a maximum of 78.8°F and a minimum of 59°F. The warmest part of the day will be from 1 pm to 4 pm.
The temperature is expected to be moderately higher than the average peak in October, which is 76.6°F. The night temperature will be also comparable to the standard October low of 55.8°F.
Updated: Oct 20, 2026 @ 09:53:33 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (2:53 am PDT) it is 57.2°F in Castaic.

On Tuesday, in Castaic, expect consistent sunshine and open skies.

Today, the highest temperature in Castaic will be 80.6°F, while the lowest temperature will be 55.4°F. The maximum heat index, which indicates how humid air affects the felt temperature, is computed to be 80.6°F.
The maximum temperature will be a few degrees higher than the average highest temperature of 76.6°F in October. The lowest temperature will be in line with the average low of 55.8°F.

On Tuesday, in Castaic, sunrise will be at 7:04 am and sunset at 6:14 pm (PDT).

In Castaic, today, there will be 11h and 10min of daylight.