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 2:21 PM. The temperature feels like 62.849999999999994 with a humidity level of 18 so dress accordingly. Cloud coverage is 1 percent with visibility at 14.5 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling east at a speed of 6 MPH. At the end of the day don’t miss the sunset at 12:54 AM.