It seems to me that we get some kind of cold/coldish winter every 5 years since the mid 80s. The winter of 85-86 was of course a cold one, The winter of 90-91 was the next cold one,then followed by the winter 95-96. The winter of 2000-01 was a fairly cool one,then the next one the winter of 05-06 was coolish. the winters 86-87 and 96-97 would be considered average (or may coolish by recent standards) but it seems generally we get some kind of a cool winter every 5 years since the mid 80s. So going by that the next cool winter should be the winter of 2010-11.