Weather is not climate. Again, you just keep mistaking one for the other. A difference  of 2 degrees locally is not a big deal, but in terms of the global average temperature, it is an ENORMOUS deal. You claim to be a scientist; surely you can see this.

The global average temperature is going up rapidly and steadily, and has been since 1980. This is especially true in the Arctic, where the ice cap plays a key role in regulating the thermohaline circulation--ocean currents--and the jet stream, which shapes conditions in the northern hemisphere, where most people live.

Human civilization developed in a kind of happy climatic medium, average temperature about 57.5 degrees, and this temperature implies the existence of a wide range of conditions needed for human civilizations to exist: rainfall patterns, drought and fires, conditions conducive to agricultural production, disease vectors and so on.  Get much outside of that climatic optimum and civilization is in trouble.