Every once in a while, ForecastWatch performs a comprehensive study on the biggest weather predictors, such as the Weather Channel, AccuWeather and the National Weather Service, and international companies such as Foreca and MeteoGroup. One of these analyses was published last week, and it included forecast data from 11 forecast providers from 2010 to 2016. In total, over 142 million forecasts were analyzed, according to ForecastWatch’s overview.