On 02/04/17 10:52, John Hall wrote:
Away from the coast, I think showers tend to be relatively rare in the
winter months, and first become noticeable around April. Also the
contribution of frontal rain tends to become less as we move into
spring. Arguably the "March winds" part of the rhyme is less reliable.

Also "February fill-dyke" probably refers to snow-melt, not excess rain
as I believe it's one of the drier months.

--
Graham P Davis, Bracknell, Berks. [Retd meteorologist/programmer]
Web-site: http://www.scarlet-jade.com/
Never approach a bull from the front, a horse from the rear,
or an idiot from any direction! [Irish proverb]