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The business of predicting the weather

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WindBorne's weather balloons fly longer than most, collecting more measurements of temperature, humidity and other indicators to create a more precise picture.

WindBorne's weather balloons fly longer than most, collecting more measurements of temperature, humidity and other indicators to create a more precise picture.

PHOTO: JASON HENRY/NYTIMES

Tim Fernholz

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Weather forecasts, believe it or not, have come a long way. A five-day forecast today is as accurate as a three-day forecast four decades ago.

But the 10-day forecast? That’s still a coin flip – or an opportunity if you’re in the weather prediction business.

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