If you planning to travel to Fort Smith National Historic Site, Fort Smith, Arkansas, 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 12:59 PM. The temperature feels like 45.35 with a humidity level of 56 so dress accordingly. Cloud coverage is 2 percent with visibility at 14.1 percent. Today’s UV index is 4, don’t forget the sunscreen if you need it! Today’s winds are traveling west-northwest at a speed of 9 MPH. At the end of the day don’t miss the sunset at 11:07 PM.