We don’t know this
If the Gulf Stream stops bringing warm currents from the tropics in the Atlantic we could easily have Canada winters of harsh -20C, our weather in the winter is mild for our latitude because of the Gulf Stream - so if that weakens - who knows?
There will be another COP meeting this year, the data will be presented, but no leaders will do anything effective. We have no hope to keep temperature rises under 1.5C, we will put the amount of carbon dioxide into the atmosphere for this rise to happen before 2030.
There is a likelihood of more summer storms, warmer air holds more moisture, which cause more damage because trees with leaves on have a greater surface area to be blown down, locally our fire brigade have put out double figure fires this week. Nice dry ground to get them going.
And this is before tipping points are added in.
So yes we are likely to get more and more heatwaves in with a lot of other extreme weather.
I think the days of steady, predictable, largely temperate seasons are rapidly drawing to an end. But hey politicians have been presented with this data at COP meetings for decades.