That graph sends shivvers up my spine...pun intended. I live in SD, and this summer was way too cool for my garden’s own good.
Global cooling is a much worse senario than warming.
The hot weather crops like okra and tomatoes have not done well here in north GA this summer or last.
Try living with about 60+ days of 100+ degrees and little to no rainfall. (not to mention 6 months of a broken well pump)
Talk about crappy gardening conditions.