Global what?

Last Saturday was our school's Summer Fayre and naturally, we were very concerned about the weather in the runup to the event.
I went to the BBC weather site and five days before, it forecast heavy rain. The following day it also predicted heavy rain. With three days to go, it was light rain. By the Thursday, it was telling us that the weather would be rain-free. The day before and heavy rain was back on the agenda.
Very early on the Saturday it was to be light rain from 1pm.
IT WAS DRY ALL DAY. There was some late evening rain!

And we are told that scientists can predict global warming years down the line?