Train beyond the minimum conditions you expect.

Expectations are a poor upper limit for training, because conditions rarely hold still. If you practice for exactly the weather you predict, any variation puts you outside your range immediately. Building past the forecast gives you margin, and margin is what turns a surprise into an inconvenience rather than a failure.

Pick something you rehearse or plan for and add a layer of difficulty on purpose: more noise, less time, fewer resources, a colder room. Notice how much calmer the real version feels afterward. The point is not toughness for its own sake but making the expected case comfortably inside what you can already handle.