Don't worry Ian, here in Hungary, a country with "more stable continental climates" in the last 2-3 years the weather changed very quickly too, many times. This summer for example, after a few weeks of 37-38°C, instantly we found us in 18-19°C from a day to another. This is not normal here, I think, and in the past there were very few examples of such changes, but now there are more and more, there is happening something with the climate indeed.