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 12:21 PM. The temperature feels like 40.6 with a humidity level of 65 so dress accordingly. Cloud coverage is 71 percent with visibility at 13.4 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling southeast at a speed of 12 MPH. At the end of the day don’t miss the sunset at 10:22 PM.