Seems to me if global warming is real, it actually has to get warmer at some point.
Oh, it IS. Just not where you live. Ever.
Just last week many of my Australian friends were bitching because Melbourne was having over 40* C weather (a little under 105*F). Yet when I lived in Australia, this was happening back in 1982. One of the worse droughts, ever. Yet back then, they called it "Summer". This year the Australian press can't shut-up about global warming because the temperatures got so high.
Maybe someday, somewhere, we'll start breaking records, year after year, relentlessly, and they we can believe it. But neither a heat wave nor a cold snap proves anything.