If you planning to travel to Johnson's Beach, Guerneville, 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 2:54 PM. The temperature feels like 48.35 with a humidity level of 72 so dress accordingly. Cloud coverage is 3 percent with visibility at 13.7 percent. Today’s UV index is 4, don’t forget the sunscreen if you need it! Today’s winds are traveling northwest at a speed of 8 MPH. At the end of the day don’t miss the sunset at 12:58 AM.