Some high temperatures in U.S. could dip to 20 degrees below the average . Rain or snow can be expected Tuesday through much of the Great Lakes area , down to Tennessee and eastward toward the Carolinas and southern New England . ` Rockies , Appalachians and areas impacted by lake effect could see some snow . Comment:
Some high temperatures in U.S. could dip to 20 degrees below the average . Rockies , Appalachians and areas impacted by lake effect could see some snow . Comment: