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United States Historical Climatology Network

Select a state from the pulldown list and click "Map Sites" to show its stations on the map.

Click on a map station or select a station from the state station list to navigate to the daily and monthly data and documentation.

(Note: You can download monthly data for the whole U.S. and daily data for the whole U.S. or individual states by using the FTP links on the Data Access page.)

Note: A related product using a subset of the USHCN-Daily data is now available - DayRec: An Interface for Exploring United States Record-Maximum/Minimum Daily Temperatures
Select a state: