This is highly dependent on the crop, and when in the plant's growth cycle the heat comes. For example, crops like wheat benefit from a hot dry period when the

This is highly dependent on the crop, and when in the plant's growth cycle the heat comes. For example, crops like wheat benefit from a hot dry period when they get close to harvest time. Same for some vegetables like tomatoes, peppers and eggplant. The challenge isn't so much that high heat (to an extent) and agriculture is incompatible, it's that unexpected high-heat, or high heat at unexpected times can be damaging. Don't think that I'm downplaying the risk of climate change to agriculture, there are plenty of very serious negative effects that climate change will have on agriculture, but warmer temperatures on their own, at least at this range, aren't directly a huge issue if they're expected.