It'll be too late now - you could move them to an urban heat island such as Newcastle on Tyne ...
There's an aurora watch in operation in the higher latitudes. A whole wadge of solar particles is due to hit us tomorrow - from a sunspot - that'll be interesting. The New Moon and with it the Chinese New Year - of the Green Monkey - are tonight. That new year isn't considered to really start until Feb 4th, which is the 'start of spring'.