If you planning to travel to Mammoth Rocks, Jenner, 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 1:34 PM. The temperature feels like 52.900000000000006 with a humidity level of 65 so dress accordingly. Cloud coverage is 9 percent with visibility at 14 percent. Today’s UV index is 8, don’t forget the sunscreen if you need it! Today’s winds are traveling northwest at a speed of 11 MPH. At the end of the day don’t miss the sunset at 2:50 AM.