Traveling to Washington Park Arboretum, Seattle, Washington? Here is your 6-day weather forecast in the area. Whether it is a warm weather destinations or cold climate don’t forget to consider weather, while you pack your bags for this trip. Start your day when the sunrises at 3:36 PM and don’t miss the sunset at 12:21 AM. Today’s winds are traveling south-southeast at a speed of 5 MPH. The temperature feels like 29 with a humidity level of 75. Cloud coverage is 91 percent with 13.1 percent visibility. Today’s UV index is 2 make sure to prepare properly. Make sure to plan your travel itinerary to match your travel weather forecast to make the most of your vacation with Reservations.com.