If you planning to travel to Mammoth Spring State Park, Mammoth Spring, 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 12:38 PM. The temperature feels like 55.050000000000004 with a humidity level of 67 so dress accordingly. Cloud coverage is 9 percent with visibility at 12.2 percent. Today’s UV index is 5, don’t forget the sunscreen if you need it! Today’s winds are traveling south at a speed of 3 MPH. At the end of the day don’t miss the sunset at 12:00 AM.