If you planning to travel to Johnston Historical Farm, Piqua, Ohio, 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 11:42 AM. The temperature feels like 50.55 with a humidity level of 72 so dress accordingly. Cloud coverage is 2 percent with visibility at 12.5 percent. Today’s UV index is 5, don’t forget the sunscreen if you need it! Today’s winds are traveling east-northeast at a speed of 6 MPH. At the end of the day don’t miss the sunset at 11:05 PM.