[unpaywalled] “Everyone complains about the weather forecast, but some people have more cause to grumble than others. In Miami, the temperature forecast is usually accurate a week into the future. But in Paonia, Colo., even the one-day temperature forecast is wrong by almost 6 degrees Fahrenheit on average. That’s according to our analysis of government data shared publicly for the first time with The Washington Post. The data reveals the broad patterns and the fine contours of the accuracy of the National Weather Service’s official forecast, which triggers the country’s emergency alert systems and powers countless commercial weather products. To make sense of the data, we made a map of the contiguous United States showing how many days into the future the Weather Service’s forecast of the daily high temperature is accurate within 3 degrees Fahrenheit.”