All of this is anecdotal - and we should be careful how seriously we take the anecdotal evidence.
HOWEVER, I'm not one to dismiss the observations from the real world outside the back door, even if they aren't carefully measured over time. Anecdotes of extreme weather are coming in from all over the globe. In fact, if more people lived at the Arctic, we would be innundated with these stories.
Anyone over the age of 30 should realize the weather is a'changin' in their own living memory. Now, in a human lifetime, that definitely could be just a weird blip in the data. HOWEVER, when those anecdotes start marrying with the meticulously measured scientific data from across every scientific discipline, it's time to take notice.
It also requires explaining away some trivial information right out of the back door. You can't deny CO2 absorbs and reemits heat energy. You can't deny (and be considered a serious commentator worthy of attention) that CO2 is increasing in the atmosphere (among other GHGs). You then have to justify why there is no energy imbalance. Even if you (falsely) don't believe the extra CO2 is anthropogenic, the only rational conclusion is to change the parameter you can control.