If you planning to travel to Long Acres Alpaca Farm, Mercersburg, Pennsylvania, 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 37.65 with a humidity level of 77 so dress accordingly. Cloud coverage is 52 percent with visibility at 13.1 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 7 MPH. At the end of the day don’t miss the sunset at 9:50 PM.