Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

WMO Climatological Standard Normals for 1991-2020 (NCEI Accession 0253808)

Metadata Updated: November 1, 2023

The World Meteorological Organization (WMO) Climatological Standard Normals are a large suite of data products that provide information about typical climate conditions for thousands of locations across the world. Normals act both as a ruler to compare today’s weather and tomorrow’s forecast, and as a predictor of conditions on a calendar basis. The Normals are calculated for a uniform 30-year period, and consist of monthly averages and statistics of temperature, precipitation, and other climatological variables observed in all member countries. Member countries follow a standard set of methods for performing these calculations, WMO No.1203. The Normals are generated every 10 years in keeping with the needs of our users and the requirements of the WMO. These data allow travelers to pack the right clothes, farmers to plant the best crop varieties, and utilities to plan for seasonal energy usage. Many other important economic decisions that are made beyond the predictive range of standard weather forecasts are either based on or influenced by climate Normals. Finally, they are used most commonly in broadcast meteorology. These valuable data are stored by the World Data Center for Meteorology - Asheville.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Date 2023-10-14T23:02:33Z
Metadata Created Date March 17, 2023
Metadata Updated Date November 1, 2023
Reference Date(s) August 1, 2023 (publication), October 13, 2023 (revision)
Frequency Of Update asNeeded

Metadata Source

Harvested from NOAA/NESDIS/ncei/accessions

Graphic Preview

Preview graphic

Additional Metadata

Resource Type Dataset
Metadata Date 2023-10-14T23:02:33Z
Metadata Created Date March 17, 2023
Metadata Updated Date November 1, 2023
Reference Date(s) August 1, 2023 (publication), October 13, 2023 (revision)
Responsible Party (Point of Contact)
Contact Email
Guid gov.noaa.nodc:0253808
Access Constraints Cite as: WMO Member Nations (2023). WMO Climatological Standard Normals for 1991-2020 (NCEI Accession 0253808). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. Accessed [date]., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Bbox East Long 180
Bbox North Lat 90
Bbox South Lat -90
Bbox West Long -180
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description Preview graphic
Graphic Preview File
Graphic Preview Type PNG
Harvest Object Id b6b341af-41de-4362-bf47-523658677834
Harvest Source Id c084a438-6f6b-470d-93e0-16aeddb9f513
Harvest Source Title NOAA/NESDIS/ncei/accessions
Licence accessLevel: Public
Metadata Language eng
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1991-01-01
Temporal Extent End 2020-12-31

Didn't find what you're looking for? Suggest a dataset here.