Honestly, I’ve never turned a weather vane into a data pipeline, but if you’re serious about it, you’d start by sampling the vane’s azimuth at high frequency, timestamp each spin, and feed it into a time‑series model. The tricky part is correlating those spins with soil moisture, temperature, and even the micro‑climate that onions care about. I’m skeptical the vane alone is enough—better to pair it with a weather station and a greenhouse sensor array. But hey, if you can decode the spins, you might just grow the most stubborn onions in the field.