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 11:51 AM. The temperature feels like 70.8 with a humidity level of 35 so dress accordingly. Cloud coverage is 7 percent with visibility at 14.7 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling northwest at a speed of 9 MPH. At the end of the day don’t miss the sunset at 12:47 AM.