tl;dr

high temps =

depleted snowpacks = yuge reduction in hydroelectric power
3m people in california alone work outside and they may soon be unable to safely, resulting in loss of income / property
a lot of shit is going to burst into flames. constantly.
new silicon valley growth sectors = firetech / airtech / non-grid power solutions ( solar / battery / propane )
entire agriculture sector is going to be unrecognizable in the face of water loss and other requisite resources going fallow, 'specialty crops' the new hotness
we may see the first legitimate climate generated mass migration very, very soon
if we dont stop fucking around and focus on this issue in unison, this planet turns into mars. fast.