The attached map shows the snow depth on the ground as of January 12, 2011. With snow on the top of Mauna Loa in Hawaii, 49 of the 50 states have snow on the ground this morning. The lone holdout, Florida is a near miss with snow on the ground just north of Florida in Georgia.
Although unusual, this did occur as recently as last February 2010 when 49 of the 50 states also had snow on the ground. Florida was among the 49 dates in February 2010 and Hawaii was the lone holdout without any snow on its mountain peaks.