This is one of those marketing theories which just amaze. Amaze because someone even thought to study the impact of wind, temperature and the food we'll buy.
"in the second year of an extensive partnership with the Weather Co., Walmart is delving far deeper into sometimes unlikely correlations between weather and store sales on a Zip Code level."
Simply put this means that by paying attention to the weather forecast and knowing how variations in wind and temperature affect what shoppers will buy, Walmart is able to get up front displays of these various items.
"For example low wind has some impact on whether or not people will eat berries. Ideal berry weather turns out to be low wind with temperatures below 80 degrees. So, Walmart has begun serving up merchandising displays and digital ads for berries in Zip Codes where such weather exists, and as much as tripling berry sales when it does."
And there's more at the link. When people are more likely to eat steak or hamburger or salad. It seems obvious that temperature plays a role in what we like to eat, but wind is a new one.