Average weather here in the great midwest

Beware of the average lie when if comes to weather. Weather people are always fond of telling you that the temperature or rainfall is this much or that much above or below average for this time of year. Here's the big problem; this part of the world never gets average weather. Now you can take all those highs and those lows, those drenching rains and weeks of drought, those summer scorchers and Arctic blasts, windy days and doldrums, and you can average them even though you never get those conditions. So within 4 days the weather goes from lows in the upper 30s and low 40s to highs in the upper 80s and low 90s. Somewhere between the two is some nice average weather, but it never happens, just the turbulent stormy transition from one to the other. And then just to make life interesting, after a front passed during the night and morning dawns more summery, a day's outing took us north back across the front, so the temperature drops like a stone, storms attempt to belt us off the road, and then after a bit of wait, the front passes us again. Dumb. More on the field trip later.