It cannot be "twice as cold" tomorrow - the numbers used to specify temperature are just numbers - temperature isn't something you can have half of or double the amount. You are probably talking Fahrenheit, whereas the rest of the world talks in Centigrade or Celsius. You can get cutesy and specify temperature in Absolute degrees or even Rankine degrees. But NONE of those numbers can give you "twice as cold" You CAN have twice as much heat, or half the amount of heat - but there is no way to know what temperature that would be. Buy yourself a heater and stay warm. Where I live it is 26 Centigrade today and we have the cooling on maximum to stay comfortable!!!