These averages are specific to each county and month. NCEI references these averages as varieties of climate normals, we will reference these values as average. The NClimDiv database hosts multiple types of historical averages: 30-year averages starting from 1901, 1895-2010 average, and 20th century average, the latter is being used in this experience. 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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