Anyone have a source for greatest diurnal variation in Harrisburg history? ChatGPT says that MUI just beat Harrisburg's record but I am assuming AI is off on this one. I could not manipulate any of the sites I know of to give me the info. Have not seen @Jns2183 in a while, hopefully he is ok. Only 63 here at noon. Mid 70's in parts of the central LSV.