If you planning to travel to Rainbow Falls, 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 2:48 PM. The temperature feels like 20.3 with a humidity level of 56 so dress accordingly. Cloud coverage is 32 percent with visibility at 14.9 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling northeast at a speed of 4 MPH. At the end of the day don’t miss the sunset at 12:39 AM.