Synopsis: Based on actual real-world data, global warming does not cause more extreme weather.
Source here. "Air temperature variability almost always decreases when mean air temperature rises, be it in cases of temperature change over tens of thousands of years or over mere decades, or even between individual cooler and warmer years when different ENSO states are considered. The claim that global warming will lead to more extremes of climate and weather, including more extremes of temperature itself, is not supported by real-world data."