Weather changes. Climate is the accumulated average across years. It’s “yesterday it rained here” vs “we got an average of x litters of water per square meter during this month in the last ten years”. Climate changes, but by its own nature it should change really gradually.

The point is that weather is changing so much that even climate is changing quickly now. Or, in a car metaphor: not only our velocity is increasing, our acceleration is also increasing m.

I think a stronger word like “climate emergency” would have been more appropriate.