Don't let these temperatures fool you: The extreme winters of the past are gone

[Think. Again.]

3. Climate scientists do actually take the increased/decreased winds....

...that are caused by all sorts of feedback loops, into account.

But yes, you've hit on one of the most difficult aspects of trying to gauge or predict what we're doing to ourselves, and that is the complexity of the all the millions of varying and inter-acting systems that make up our ecosphere that are being affected by the covering of CO2 that we are creating over the atmosphere. Those changing wind patterns are just one consideration, and it is realistically impossible to consider how all of the millions of changing systems will influence each other.