Doing bloody well to get anything under the seat of an FZ6 - there ain't a right lot of space there.....
As for weather, I had the same in May going up to Scotland - bright sunshine as far as Edinburgh, then rain up to a bit past Perth, and snow for a long way between Perth - Inverness, before turning to rain again.
I hadn't planned for it either, and it wasn't mentioned on the weather forecast either.