Gone are the days where I start frantically looking for cold charts to appear in early November when the clocks go back. There have been many years recently where the cold simply isn't cold enough to get to the surface (certainly down here) until after mid January. Thereafter we have a 6 week window of opportunity until around 7th March before the strength of the sun overcomes the thermal lag that takes winter potential into March.
I'm studying Scandinavia this Autumn watching the advance of winter. Its a slow process currently ebbing and flowing in the far north at present, occasionally reaching as far south central Finland and northern Sweden. Currently its devoid of any proper cold air with all stations above 0c (32f) apart from places at altitude in Northern Norway.
Originally Posted by: Gusty