If you planning to travel to Castaic Lake, Castaic, California, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 2:39 PM. The temperature feels like 55.949999999999996 with a humidity level of 29 so dress accordingly. Cloud coverage is 21 percent with visibility at 0.5 percent. Today’s UV index is 4, don’t forget the sunscreen if you need it! Today’s winds are traveling northeast at a speed of 9 MPH. At the end of the day don’t miss the sunset at 12:44 AM.