Best year time to visit Castaic

General weather information about Castaic

Average annual temperature is 17.0 °C

Absolute maximum temperature: 39.3 °C

Absolute minimum temperature: 0.9 °C

Number of sunny days: 272 days

Number of rainy days: 93 days

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* Weather data for Castaic United States is based on climate observations for 2026 year

Castaic air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)18.722.120.030.534.137.138.939.335.336.730.224.1
Average daytime temperature (°C)14.315.715.223.223.525.635.433.128.728.622.018.9
Average temperature (°C)9.49.29.915.717.018.727.925.721.620.615.012.7
Average night temperature (°C)6.04.76.29.812.014.020.719.416.614.39.78.3
Absolute minimum temperature (°C)1.20.91.33.67.911.715.614.912.79.14.13.8

Castaic monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.013.012.011.010.010.0
Daylight mean duration (h)10.110.912.013.114.014.414.213.412.411.310.49.9
Daylight minimum duration (h)9.010.011.012.013.014.013.012.011.010.010.09.0
Sunshine mean duration (h)6.08.47.711.310.710.713.111.49.910.29.07.3
Precipitation (mm)2761312021017707926123116
Sunny days191510262023312823282524
Rainy days1213214117037357
Snow days000000000000

Castaic - weather forecast by months

Castaic weather in januaryCastaic weather in februaryCastaic weather in marchCastaic weather in aprilCastaic weather in mayCastaic weather in juneCastaic weather in julyCastaic weather in augustCastaic weather in septemberCastaic weather in octoberCastaic weather in novemberCastaic weather in december

Best time to visit Castaic:

The best time to visit Castaic during the most sunny months:

  • July — 13.1(h)

The largest precipitation sum in Castaic is at

  • January — 276(mm)
  • February — 131(mm)
  • March — 202(mm)
  • December — 116(mm)

    • Weather forecast in the closest to Castaic admin centers

    Weather forecast in the closest towns to Castaic

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    Frequently asked questions

    When is the best time to visit Castaic?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Castaic.
    What is the weather like in Castaic?
    See average temperature, rainfall and daylight hours for Castaic by month in the table above.
    How many sunny days does Castaic have?
    The monthly weather statistics above show sunshine and rainfall patterns for Castaic throughout the year.