For some reason after you have a day or two in a row of mid 50's to low 60's a 35 degree or so day seems to be really cold. This day started out looking like it was going to be nice. Open the blinds and let the warm sun in. There was a frost but it didn't last too long as that warm sun burnt it off pretty quick. As it turned out, the day was cold and it stayed that way all day. Good day to clean up the files in a computer.