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U.S. Climate Normals 2020: U.S. Hourly Climate Normals (1991-2020)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 27, 2026 | Last Modified: 2021-05-04T00:00:00.000+00:00
The U.S. Hourly Climate Normals for 1991 to 2020 provides hourly meteorological parameters for hundreds of U.S. stations located across the 50 states, as well as U.S. Territories and Commonwealths, and the Compact of Free Association nations. These stations are now largely automated, and are usually part of the Automated Surface Observing System (ASOS) or Automated Weather Observing System (AWOS). The hourly normals include temperature, dew point, heat index, wind chill, wind, cloudiness, heating and cooling degree hours, pressure normals, and other statistics of these variables. Users can access the data either by product or by station. All data utilized in the computation of the 1991-2020 Climate Normals were taken from the Integrated Surface Dataset (ISD) Lite (a subset of NCEI's Integrated Surface Dataset). These source datasets (including intermediate datasets used in the computation of products) are also archived at the NOAA NCEI.

Resources

16 resources available

  • NCEI Dataset Landing Page

    PLACEHOLDER/VALUE
  • NCEI Product Information Page

    PLACEHOLDER/VALUE
  • NCEI Direct Download (Dataset Files)

    PLACEHOLDER/VALUE
  • NCEI Common Access

    PLACEHOLDER/VALUE
  • Normals Hourly Documentation 1991-2020

    PLACEHOLDER/VALUE
  • Normals Calculation Methodology 2020

    PLACEHOLDER/VALUE
  • Readme By-Variable By-Station Normals Files

    PLACEHOLDER/VALUE
  • Normals Hourly 1991-2020 CSV Sample

    PLACEHOLDER/VALUE
  • Registry of Open Data on AWS

    PLACEHOLDER/VALUE
  • AWS S3 Explorer (Region: us-east-1)

    PLACEHOLDER/VALUE
  • Azure Landing Page (Region: us-east)

    FILE
  • 1981-2010 U.S. Hourly Normals

    PLACEHOLDER/VALUE
  • NCEI web page for the U.S. Gridded Climate Normals

    PLACEHOLDER/VALUE
  • NCEI web page for the 1981–2010 U.S. Climate Normals

    PLACEHOLDER/VALUE
  • Global Change Master Directory (GCMD) Keywords

    PLACEHOLDER/VALUE
  • GCOS Essential Climate Variables

    PLACEHOLDER/VALUE

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