If you planning to travel to Tyee Valley Golf Course, SeaTac, Washington, 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 5:45 AM. The temperature feels like 79.25 with a humidity level of 85 so dress accordingly. Cloud coverage is 75 percent with visibility at 10.5 percent. Today’s UV index is 5, don’t forget the sunscreen if you need it! Today’s winds are traveling south at a speed of 13 MPH. At the end of the day don’t miss the sunset at 5:53 PM.