If you planning to travel to Crystal Lake Trailhead, Mammoth Lakes, 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 3:08 PM. The temperature feels like 15.55 with a humidity level of 73 so dress accordingly. Cloud coverage is 57 percent with visibility at 10.2 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling southwest at a speed of 13 MPH. At the end of the day don’t miss the sunset at 12:43 AM.