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U.S. Historical Climatology Network (USHCN)

The U.S. Historical Climatology Network (USHCN) data are used to quantify national- and regional-scale temperature changes in the contiguous United States (CONUS). The USHCN is a designated subset of the NOAA Cooperative Observer Program (COOP) Network with sites selected according to their spatial coverage, record length, data completeness, and historical stability.

Climate Data Online (CDO)
For users who know the station(s) for which they want data
U.S. Historical Climatology Network (USHCN)
Learn more about the USHCN and how to access the data.

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U.S. Historical Climatology Network (USHCN)