If you planning to travel to Fort Casey State Park, Coupeville, 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 3:58 PM. The temperature feels like 40.099999999999994 with a humidity level of 91 so dress accordingly. Cloud coverage is 79 percent with visibility at 9.4 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southeast at a speed of 23 MPH. At the end of the day don’t miss the sunset at 12:22 AM.