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 3:08 PM. The temperature feels like 19.8 with a humidity level of 77 so dress accordingly. Cloud coverage is 64 percent with visibility at 8.1 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 9 MPH. At the end of the day don’t miss the sunset at 12:43 AM.