If you planning to travel to Friendship Arch, 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 11:48 AM. The temperature feels like 44.599999999999994 with a humidity level of 49 so dress accordingly. Cloud coverage is 29 percent with visibility at 14.9 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling east-northeast at a speed of 4 MPH. At the end of the day don’t miss the sunset at 9:54 PM.