A good few years ago now, when I was attending a cousin's wedding in Ireland, I first heard about the custom of leaving out a statue of the 'Child of Prague' to ensure good weather for the weather.

From Wikipedia

"In Ireland, the statue is popular and is called "Child of Prague". A wedding gift of a statue of the Child of Prague is particularly auspicious. Irish brides hoping for good luck and good weather on the wedding day ritually place a copy of the statue outside their homes.[21] Devotion to the Child of Prague and belief in its power to influence the weather is still strong in many parts of Ireland. It is also common to see the Child of Prague displayed in the window of houses in some of the older parts of Dublin and the practice of putting it out in the hedge or burying it in the garden as a solicitation for good weather is widespread in areas as far apart as Cork, Dublin, Sligo and the county of Leitrim.[22]"