Weather in Castaic, United States 🇺🇸
As of now, Castaic is 14°C and clear, feeling like 13°C. The air is at 55% humidity and winds are about 4 km/h, and the UV index is 0 (low). Over the next few days, temperatures in Castaic range from about 14°C to 28°C.
Hourly Forecast for Castaic
14-Day Forecast for Castaic
Sunny
Sunny
Sunny
Light rain shower
Patchy rain nearby
Overcast
Overcast
Sunny
Sunny
Sunny
Sunny
Sunny
Overcast
Sunny
Additional Forecasts for Castaic
Air Quality
Historical Weather
Weather Forecasts for Other Cities in United States
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Best Time to Be Outside in Castaic Today
The most comfortable window in Castaic today looks like 17:00 to 20:00, when it is around 22°C. It should stay dry through that window. No significant rain is expected in the next several hours.
Frequently Asked Questions about Weather in Castaic
What is the temperature in Castaic right now?
Castaic is sitting at 14°C (58°F) right now, clear (feels like 13°C).
What's the weather like in Castaic right now?
Right now Castaic has Clear, humidity 55%, wind 4 km/h WNW.
What is today's forecast for Castaic?
Today in Castaic: high 25°C, low 14°C, sunny. Chance of rain: 1%.
What is the 7-day weather forecast for Castaic?
Daily highs and lows for Castaic:
- 2026-09-03: 25°C / 14°C
- 2026-09-04: 25°C / 15°C
- 2026-09-05: 28°C / 16°C
- 2026-09-06: 23°C / 16°C
- 2026-09-07: 23°C / 15°C
- 2026-09-08: 26°C / 19°C
- 2026-09-09: 26°C / 17°C
Is it going to rain in Castaic today?
There is a 1% chance of rain in Castaic today.
What is the wind speed in Castaic right now?
Wind in Castaic is currently 4 km/h (2 mph) from the WNW.
What is the UV index in Castaic right now?
The UV index in Castaic is currently 0 (low). Sun protection is recommended when the index is 3 or higher.
