As baking calefaction envelops the nation, the clamminess accumulated with record-breaking temperatures is creating alarming conditions. On Monday the mercury never fell beneath 80 degrees in Burlington, Vermont, establishing the city's new best almanac "high-minimum" temperature for any agenda day. On Tuesday the calefaction basis -- which is what the temperature feels like -- will ascend to 101 degrees in New York City; 102 degrees in Boston; 108 degrees in Washington, D.C.; 100 degrees in Oklahoma City; and 99 degrees in Raleigh. On the Fourth of July the calefaction basis will ability 99 degrees in Boston; 98 degrees in Washington, D.C.; 105 degrees in Louisville and 102 degrees in Memphis.