If you planning to travel to Sun Lakes State Park, Coulee City, 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 3:00 PM. The temperature feels like 40.5 with a humidity level of 92 so dress accordingly. Cloud coverage is 89 percent with visibility at 7.2 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling south at a speed of 19 MPH. At the end of the day don’t miss the sunset at 12:23 AM.