It's amazing how many stupid people decide to climb Snowdon wearing flip flops, and only wearing shorts and a T shirt only to get to the summit and find that it's snowing and -10. Then they just stand there looking gormless and can't understand how and why the weather is different at the summit.
SOme years ago - shortly after I left my ex and was living alone again - I went to Llanberis and was at a loose end for a few hours
So I decided to head up the simple path from there to Snowdon
no intention of trying to get to the top just walk for a while - have lunch from my backpack - and walk back to the car
I was wearing walking shoes and has a spare jumper and waterproof in my back - so I was OK but would never have tried to get to teh top with that equipment - even though it was a reasonable day weather wise
When I stopped and had lunch I saw loads of people walking up past me
a considerable number were less well equipped that I was - even though they were probably planning on getting to the top and had planned it all - and I was just wearing what I had in the car
It did turn colder and more rainy later on so I assume they got wet - according to the local papers no-one died
(it is Llanberis after all - when I first moved to North Wales I was talking to a local who said he had just met some people who had visited Llanberis and said it was a lovely sunny day - he reckoned they had got lost and been in the wrong place!!!)