You'd think we were well on the way to being prepared for anything, weatherwise. If you studied the skies for fifty years, you might never know about Halley's comet. After five hundred years of record keeping, you could predict with confidence its next appearance. But knowing an event's probable cycle may not be enough. If we know that a devastating weather event may occur only infrequently there must be policy questions about how much resources to put into preparation for it.
Recent history casts the decision in a considerably more positive light.
Having that information raises questions not answers. Even if the closest you get to a wheatfield is the bakery department in Safeway, you're deeply affected by agriculture both as a food source and as an economic engine. And agriculture lives or dies on weather. That's only one of the more obvious relationships. Insect populations, both as food chain dainties and as disease carriers, ebb and flow with the weather.