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 12:43 PM. The temperature feels like 36.75 with a humidity level of 70 so dress accordingly. Cloud coverage is 6 percent with visibility at 13 percent. Today’s UV index is 4, don’t forget the sunscreen if you need it! Today’s winds are traveling south at a speed of 2 MPH. At the end of the day don’t miss the sunset at 11:56 PM.