The problem with just 0.8 degrees C of warming of the last century, is that it is too small. It just can’t be everywhere at once. This is why the littany of disasters must be combined from multiple years. There was a heat wave and drought in Russia and Brazil last year, but this year it is the Texas and China. Before hurricanes Irene and Lee caused flooding this year, you had to go all the way back to Katrina and Rita.
When a temperature trend is imperceptible to humans within the noise of natural variation and urban heat islands, it just can’t be warmer everywhere at once, and some places miss global warming entirely.