Ok, maybe a bit far... Tenerife. I was astonished to find that quite a few people go there for long weekends. Living near an airport at this end must help. I wouldn't want to stay near it at the other end though.
I'd hop on a plane to somewhere in Italy, maybe one of the Lakes like Garda or Como. A weekend relaxing in luxury with a view of lakes and mountains, sitting in the warmth.
If I only had an hour most of it would be taken up packing DH's stuff - or can I leave him behind?
I'd head for somewhere on the Norfolk coast with plenty of coats, fleeces, boots, scarves etc., thrown on the back seat of the car then we'd be guaranteed a heat wave.
It's wet windy nasty day here in Lancashire at the mo..... if someone said "right pack a bag and be ready in hour, where would you go for the weekend to be back Sunday evening?