NOAA Climate Monitoring / Climate At A Glance / Explanation / Help
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Explanation of Datasets Used for
Temperature and Precipitation Calculations

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Region Element and Dataset Used
National Precipitation - Divisional Data
Temperature - USHCN Version 2 Adjusted Data
Regional Precipitation - Divisional Data
Temperature - Divisional Data
State Precipitation - Divisional Data
Temperature - Divisional Data
City Precipitation - USHCN Version 1 Adjusted Data
Temperature - USHCN V2 Adjusted Data. Non-adjusted temperature data for current month also provided for USHCN stations. These data have not been altered by any filters or adjustment routines and are intended to be used as single point measurements. When making comparisons to historical data, use of the adjusted data outlined above is recommended.

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NOAA Climate Monitoring / Climate At A Glance / Explanation / Help