Seasonal Weather Patterns & Observations | Poor Will’s Almanack

Five decades of barometric records, cold front counts and atmospheric patterns from Yellow Springs, Ohio.

Bill Felker’s relationship with weather began in 1972 with the gift of a barometer. From that first instrument he discovered that the atmosphere breathes at a remarkably consistent rate — that cold fronts arrive on a predictable schedule and that understanding atmospheric patterns is one of the keys to understanding the natural world.

“From my graphs of barometric pressure, I discovered that the number of cold fronts each month is more or less consistent, and that the earth breathes at an average rate of about once every three to five days in winter.”
— Bill Felker

This category collects Bill’s weather observations and atmospheric writing from more than five decades of careful watching — barometric records, cold front counts, seasonal pressure patterns, and the kind of detailed local weather knowledge that only comes from staying in one place long enough to see the same patterns repeat.

Farmers, gardeners, outdoor enthusiasts, and anyone who wants to understand why the weather does what it does will find this category a practical and illuminating resource rooted in the deep local knowledge of Southwest Ohio’s Miami Valley.