Daily Weather Records
These daily weather records were compiled from a subset of stations in the Global Historical Climatological Network (GHCN)-Daily dataset. A weather record is considered broken if the value exceeds the maximum (or minimum) value recorded for an eligible station. A weather record is considered tied if the value is the same as the maximum (or minimum) value recorded for an eligible station. Daily weather parameters include Highest Min/Max Temperature, Lowest Min/Max Temperature, Highest Precipitation, Highest Snowfall and Highest Snow Depth. All stations meet defined eligibility criteria. For this application, a station is defined as the complete daily weather records at a particular location, having a unique identifier in the GHCN-Daily dataset. For a station to be considered for any weather parameter, it must have a minimum of 30 years of data with more than 182 days complete in each year. This is effectively a 30-year record of service requirement, but allows for inclusion of some stations which routinely shut down during certain seasons. Small station moves, such as a move from one property to an adjacent property, may occur within a station history. However, larger moves, such as a station moving from downtown to the city airport, generally result in the commissioning of a new station identifier. This tool treats each of these histories as a different station. In this way, it does not thread the separate histories into one record for a city. Records Timescales are characterized in three ways. In order of increasing noteworthiness, they are Daily Records, Monthly Records and All Time Records. For a given station, Daily Records refers to the specific calendar day: (e.g., the value recorded on March 7th compared to every other March 7th). Monthly Records exceed all values observed within the specified month (e.g., the value recorded on March 7th compared to all values recorded in every March). All-Time Records exceed the record of all observations, for any date, in a station's period of record. The Date Range and Location features are used to define the time and location ranges which are of interest to the user. For example, selecting a date range of March 1, 2012 through March 15, 2012 will return a list of records broken or tied on those 15 days. The Location Category and Country menus allow the user to define the geographic extent of the records of interest. For example, selecting Oklahoma will narrow the returned list of records to those that occurred in the state of Oklahoma, USA. The number of records broken for several recent periods is summarized in the table and updated daily. Due to late-arriving data, the number of recent records is likely underrepresented in all categories, but the ratio of records (warm to cold, for example) should be a fairly strong estimate of a final outcome. There are many more precipitation stations than temperature stations, so the raw number of precipitation records will likely exceed the number of temperature records in most climatic situations.
Dataset Citation
Cite this dataset when used as a source.
Dataset Identifiers
- gov.noaa.ncdc:C00781
ISO 19115-2 Metadata
gov.noaa.ncdc:C00781
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Distribution Formats |
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Ordering Instructions | Contact NCEI for other distribution options and instructions. |
Distributor |
NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Dataset Point of Contact | Customer Engagement Branch NOAA National Centers for Environmental Information 1-828-271-4800 ncei.orders@noaa.gov |
Dataset Point of Contact | Rich Baldwin Climate Data Online (CDO) Team Lead DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce +1 828-271-4800 ncei.orders@noaa.gov |
Time Period | 1870 to Present (time interval: 1-day) |
Spatial Bounding Box Coordinates |
West: -180.0
East: 180.0
South: -90.0
North: 90.0
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Spatial Coverage Map |
General Documentation |
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Publication Dates |
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Edition | 1.0 |
Data Presentation Form | Digital table - digital representation of facts or figures systematically displayed, especially in columns |
Dataset Progress Status | Ongoing - data is continually being updated |
Data Update Frequency | Daily |
Purpose | The Daily Weather Records application provides media outlets and other users a quick summary of recent and historical records set in the US and globally. These records are based on the GHCN-Daily dataset. |
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Theme keywords |
Global Change Master Directory (GCMD) Science Keywords
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Data Center keywords |
Global Change Master Directory (GCMD) Data Center Keywords
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Place keywords |
Global Change Master Directory (GCMD) Location Keywords
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Data Resolution keywords |
Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords
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Stratum keywords |
Global Change Master Directory (GCMD) Location Keywords
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Last Modified: 2023-06-23
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov