If you planning to travel to North SeaTac Park, 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 12:14 PM. The temperature feels like 75.85 with a humidity level of 41 so dress accordingly. Cloud coverage is 0 percent with visibility at 10.8 percent. Today’s UV index is 10, don’t forget the sunscreen if you need it! Today’s winds are traveling east-northeast at a speed of 9 MPH. At the end of the day don’t miss the sunset at 4:11 AM.