How do I plan a farm when weather and markets are unpredictable?

You can plan an operation now, and that is real skill. What still trips you is the part no one controls, the weather and the markets. You can build a sound plan and still watch it undone by a dry spell or a price drop. That uncertainty is maddening, and it is not a sign you are doing it wrong. The truth is you will never plan the uncertainty away. Rain and prices do what they do. The goal is not to predict them perfectly but to build a plan that can bend without breaking, one that survives a bad year rather than only thriving in a good one. Planning for uncertainty means planning for a range, not a single hoped-for outcome. For your next plan, run it against a hard year on purpose. Ask what happens if the weather turns or the price falls, and build in some room, savings, diversity, a fallback, so one blow does not sink everything. You cannot control the sky. You can make sure it does not get the final say.