If you planning to travel to University of Northern California, Petaluma, 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 2:52 PM. The temperature feels like 46.95 with a humidity level of 77 so dress accordingly. Cloud coverage is 9 percent with visibility at 12.6 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling northwest at a speed of 7 MPH. At the end of the day don’t miss the sunset at 12:56 AM.