If you planning to travel to Yountville Park, Yountville, 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 3:23 PM. The temperature feels like 49.45 with a humidity level of 46 so dress accordingly. Cloud coverage is 7 percent with visibility at 14 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 8 MPH. At the end of the day don’t miss the sunset at 1:19 AM.