Improved understanding of characteristics related to weather forecast accuracy in the United States may help meteorologists develop more accurate predictions and may help Americans better interpret their daily weather forecasts. This article examines how spatio-temporal characteristics across the United States relate to forecast accuracy. We cluster the United States into six weather regions based on weather and geographic characteristics and analyze the patterns in forecast accuracy within each weather region. We then explore the relationship between climate characteristics and forecast accuracy within these weather regions. We conclude that patterns in forecast errors are closely related to the unique climates that characterize each region.

翻译：对美国天气预报准确率相关特征的更深入理解，可能有助于气象学家开发更精准的预报，并帮助美国人更好地解读其日常天气预报。本文研究了美国各地时空特征与预报准确率的关系。我们基于天气和地理特征将美国划分为六个天气区域，并分析了每个天气区域内预报准确率的模式。随后，我们探讨了这些天气区域中气候特征与预报准确率之间的关系。结论表明，预报误差的模式与每个区域独特的气候特征密切相关。