I've had people cancel meetings with me in San Francisco 'because it was raining'. To be fair the roads here do become significantly more stressful then, but whenever it happens it feels ridiculous. My theory is that whatever the worst 1-2% of weather days per year becomes a weather excuse anywhere in the world. In the Phillipines it had to be bad typhoon, not just a normal one. In London it was moderate snowfall (that wouldn't cause a dent in switzerland for instance).