On Sunday, 28 October 2018 23:08:54 UTC, Ken Cook wrote:

Meanwhile, a very rough estimate would be average first snow falling 10th November, first with more than half cover at 09Z 25th November. Last falling 25th April, last more than half cover at 09Z 25th March.

Now that I’ve finished the spreadsheet, I can’t believe how close those rough estimates were! (1996 - 2018)
Average dates:- First falling 10th November, first more than half cover 28th November. Last falling 22nd April, last more than half cover 23rd March.

Ken
Copley
Teesdale
http://www.kencook.magix.net/#Latest Observations