Most of us will not have heard of [or care about!] weather "singularities". These are sets of dates within which a weather pattern predominates.
One such is early to mid September, when anticyclones often hold sway. This is quite a reliable singularity unless I rely on it for holidays or exterior decorating.
It worked for the B o B, and my ex-RAF father [Barrage Balloon operator] always called this period "Battle of Britain weather".
We have had a spectacular example this year, such that I managed holiday and decorating.
Don't look for it next year though .....................