Although presented side-by-side with the county-level averages, the Hawaiian data are station-specific averages and should not be considered representative of county-level climate. To provide a comprehensive account of climate across the United States, we supplemented the dataset with individual station data for each county in Hawaii.

Those data exclude Hawaii because NCEI indicated county-level averages could not be constructed with the limited data and highly variable climate patterns of the Hawaiian Islands. We leveraged the county-level temperature and precipitation averages to showcase climatic anomalies in comparison to the 20th century average. Its NOAA Monthly US Climate Divisional Database (NClimDiv) 1 provides data for temperature, precipitation, drought indices, and heating and cooling degree days for US climate divisions, states, multi-state regions, and the nation from 1895 to the present.

The National Centers for Environmental Information (NCEI), is a sub-bureau of the National Oceanic and Atmospheric Administration (NOAA). Data Methodology Temperature and Precipitation Datasets Dataset Description

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