My Dad always called St Swithin's Day 'Apple Christening Day'. I never gave it any thought until today when my neighbour observed that it was St Swithin's Day and it had been raining a lot all day.
A bit of googling and it seems my Dad was not alone in this practice - and that rain on St Swithin's Day was sometimes seen as christening the apples... I guess there may be a corelation between rain in mid July and a good harvest of apples, but I haven't checked.
It more reminded me of the lore that every family has, with sayings and associations that mean little or nothing to others. Not so very different from churches or the Church then...
May the apples be blessed with sweet juiciness... and can we not have another 39 wet days straight!