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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 | Catalog Last Checked: August 10, 2026 at 10:05 PM | Dataset Last Updated: May 04, 2021 at 12:00 AM
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

15 resources available

  • NCEI Dataset Landing Page

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    Visit Page

  • U.S. Climate Normals Product Page

    TEXT/HTML
    Visit Page

  • Data Download

    TEXT/HTML
    Visit Page

  • Data Search

    TEXT/HTML
    Visit Page

  • Normals Hourly Documentation 1991-2020

    PDF
    Download

  • Normals Calculation Methodology 2020

    PDF
    Download

  • Readme By-Variable By-Station Normals Files

    TEXT
    Download

  • Normals Hourly 1991-2020 CSV Sample

    CSV
    Download

  • Registry of Open Data on AWS

    TEXT/HTML
    Visit Page

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

    TEXT/HTML
    Visit Page

  • Azure Landing Page (Region: us-east)

    TEXT/HTML
    Visit Page

  • https://doi.org/10.1175/BAMS-D-11-00173.1

    PLACEHOLDER/VALUE
    Download

  • https://doi.org/10.7289/V5PN93JP

    TEXT/HTML
    Visit Page

  • Global Change Master Directory (GCMD) Keywords

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  • GCOS Essential Climate Variables

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Earth Science > Climate Indicators Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature Earth Science > Atmosphere > Atmospheric Winds > Surface Winds > Wind Direction Earth Science > Atmosphere > Atmospheric Winds > Surface Winds > Wind Speed Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Dew Point Temperature Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Amount Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure Atmospheric - Surface - Air Temperature

Complete Metadata
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accessLevel non-public
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describedByType application/octet-steam
description 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.
distribution 
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    "title": "Global Change Master Directory (GCMD) Keywords",
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    "mediaType": "text/html",
    "description": "The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.",
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    "description": "Overview of the GCOS Essential Climate Variables.",
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identifier https://data.noaa.gov/waf/NOAA/NESDIS/ncei/aim/iso/xml/C01622.xml
issued 2021-05-04T00:00:00.000+00:00
keyword 
[
  "Earth Science > Climate Indicators",
  "Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature",
  "Earth Science > Atmosphere > Atmospheric Winds > Surface Winds > Wind Direction",
  "Earth Science > Atmosphere > Atmospheric Winds > Surface Winds > Wind Speed",
  "Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Dew Point Temperature",
  "Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Amount",
  "Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure",
  "Atmospheric - Surface - Air Temperature",
  "Atmospheric - Surface - Wind Speed and Direction",
  "Atmospheric - Surface - Water Vapour - Dew Point",
  "Atmospheric - Upper-air - Cloud Properties",
  "Atmospheric - Surface - Air Pressure",
  "Continent > North America > United States Of America",
  "Ocean > Pacific Ocean > Central Pacific Ocean",
  "Vertical Location > Land Surface",
  "Point Resolution",
  "Point Resolution",
  "DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce",
  "Normals"
]
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2021-05-04T00:00:00.000+00:00
publisher 
{
  "name": "NOAA National Centers for Environmental Information",
  "@type": "org:Organization"
}
references 
[
  "https://doi.org/10.1175/BAMS-D-11-00173.1",
  "https://doi.org/10.7289/V5PN93JP"
]
rights otherRestrictions
spatial -64.0,-15.0,134.0,72.0
temporal 1991-01-01T00:00:00+00:00/2020-12-01T00:00:00+00:00
theme 
[
  "geospatial"
]
title U.S. Climate Normals 2020: U.S. Hourly Climate Normals (1991-2020)

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