Beets and carrots don't do well in hot dry weather. Look forward to carrots with less flavor and poor texture, as well as beets with less color.
In areas where there is humidity as well as heat, potatoes are at a higher risk of blight--a nasty rotting disease.
Meat isn't immune from heat waves either. Animals like chickens and cows can be just as stressed by higher temperatures as humans, and often they don't have air conditioning to retreat to. Higher temperatures can affect appetite, so animals like chickens don't eat as much or grow as plump--leading to tougher, more stringy meat.
And speaking of meat, many animals eat grains as a food source. Unfortunately, rising temperatures and droughts can lead to stunted crops of wheat and other products, leading to higher prices on both grain products and the animals that feed on grain.
Some of the most drastic changes could be seen in the dairy department. The researchers found that heat waves can reduce the amount of milk cows produce by 10 to 25 percent, and by up to 40 percent in extreme conditions.