Depends on where you live really. In some parts of America temperatures exceeded over 40 Celsius this past summer but they stayed that hot for extended periods of time. If anything, at least in North America our weather patterns are generally consistent. It's been freezing cold and snowy in many parts of America and in the last few years they have seen snow in places as far south as Dallas which never saw snow (or at least not that much) in the past. It's not actually global warming or temperature variations, it's a complete shift of weather patterns everywhere. Normally it's rainy and cold in the UK but that whole region has seen considerable amounts of snow in the last few years which is deemed as uncommon but has nothing to do with global warming/cooling. Our weather patterns are shifting all sorts of directions and from what I recall seeing, scientists predict that in 50-75 years Canada could have the warmer temperatures of South America during what is considered our winter, but at this rate it might take even longer as it's still consistently cold in many parts of the country. BC is the only warm province during the winter, their weather is considered balmy and they rarely drop below freezing in Vancouver while on the other side of the mountains their weather highs shift between -5 and -20 depending on the weather system, factor in the wind chill and the fact that the whole area is flat and it's really quite nasty. Even here in Ontario once we really started settling into winter a couple of weeks ago, it's been steadily cold with a few dips into the -15 range, and that temperature is worse because we are surrounded by water. I think those theories of temperature shifts that much might be off as well due to the fact that the last few winters have been cold while 5 or 6 years ago our winters were warmer but had lots more snowfall.