If you planning to travel to San Juan Island National Historic Park, Friday Harbor, 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 1:13 PM. The temperature feels like 60.9 with a humidity level of 84 so dress accordingly. Cloud coverage is 66 percent with visibility at 8 percent. Today’s UV index is 5, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southeast at a speed of 3 MPH. At the end of the day don’t miss the sunset at 3:16 AM.