I'm sorry Crewe but that is nonsense, firstly mid Feb can see some of the coldest weather of the year, secondly i'm much further south than you and there was lying snow to low ground in my area late March 2013 which hung around until April 5th, remember walking in northamptonshire and it felt bitter in northeasterly winds, felt like January, also another March in the late 00's had some bitter days in a cold Southeasterly flow in unbroken sunshine, ponds were frozen all day, the dewpoints were bitter.