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 12:04 PM. The temperature feels like 70 with a humidity level of 72 so dress accordingly. Cloud coverage is 4 percent with visibility at 14.6 percent. Today’s UV index is 6, don’t forget the sunscreen if you need it! Today’s winds are traveling southeast at a speed of 5 MPH. At the end of the day don’t miss the sunset at 11:41 PM.