Is AccuWeather accurate?
One of the world's biggest weather brands, known for long-range forecasts and the 'RealFeel' temperature.
AccuWeather does not publish exactly how its forecast is made, so its accuracy cannot be independently verified. What we can grade is the open models, which we score directly on this page. Watching those models is the honest way to judge it.
How AccuWeather makes its forecast. AccuWeather says it collects more than 190 forecast models from around the world and runs them through its own Digital Forecast System, which uses proprietary data sets. It does not name the models or publish the recipe, so its specific accuracy claims cannot be independently verified. That matters, because it means no one outside AccuWeather can check its forecast against the recorded weather the way we check the open models.
Our verdict. AccuWeather does not say which models go into its forecast, so we cannot score it directly. The honest alternative is to watch the open models themselves, which is the scoreboard on this page.
Which forecast is most accurate in the US?
CheckWeather Score, graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. Apple Weather lists ECMWF and the US National Weather Service/NOAA among its data sources. What each big weather app says about its forecast.