Forecast accuracy info
ForecastAdvisor will also show you the accuracy of the major weather forecasters, including Accuweather, The Weather Channel, Weather Underground, Foreca, Open Weathermap, AerisWeather, and the National Weather Service. We also provide links to your city's weather forecast at all the other weather forecasters, so you can compare for yourself.
How we calculate accuracy
The overall accuracy percent is computed from the one- to three-day out accuracy percentages for high temperature, low temperature, icon forecast precipitation (both rain and snow), and text forecast precipitation (both rain and snow). Temperature accuracy is the percentage of forecasts within three degrees. Precipitation accuracy is the percentage of correct forecasts. The forecasts are collected in the evening.