If you planning to travel to Mercer Slough Nature Park, Bellevue, 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 1:59 PM. The temperature feels like 63.599999999999994 with a humidity level of 68 so dress accordingly. Cloud coverage is 18 percent with visibility at 15 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling southwest at a speed of 5 MPH. At the end of the day don’t miss the sunset at 1:59 AM.