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    Most Popular Products/Free Data

    Welcome to the NCDC Most Popular Products Section

    Please hover your mouse over the links to the upper left, or simply scroll down the page to select and view more content from this area of the NCDC website. Should you have something specific to look for, submit a search in the golden search bar above.


    A few things to keep in mind while you are here...
    1. Online access is free for .gov, .edu, .mil, .k12, .us and other selected domains and many products listed here are free for all users. See the Free Access section of the NCDC Help page for detailed information.
    2. Period of record shown indicates period of data available online. The period of record for the complete data set may vary and is dependent on the desired location. Data prior to the period of record indicated may be available. The NCDC archives contain data as far back as the 1800s for certain data typesand locations. Contact the NCDC for availability, pricing and ordering information.
    3. Any data product ordered from NCDC may be certified for court, but only the more commonly certified products can be certified for court online. For ordering certified copies of items where certifications are not offered online, please contact the NCDC. For more information, please see the note on certifications on our NCDC Ordering page.
    4. Online means available through our web site for electronic delivery, although some items ordered online may require online delivery by mail and those are subject to a service charge. Some orders could be subject to a consultation fee or handling charge.
    5. Offline means the data type is not available through our web site. Contact the NCDC for availability, pricing and ordering information. Many items cost more when ordered offline.
    6. Some products require Adobe Acrobat Reader.
    7. All prices are subject to change.
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    Click on a listed product title below for more information about it...
    Please note: Although some items below have associated costs, there is at least one "free" option within each data product listed. Free items (indicated by "FREE" in item description below) are immediately viewable/downloadable from the web site.

    Free Data A:
    DSI 3505 - Integrated Surface Data, Hourly, Global
    Description: digital dataset of detailed hourly observational climate data for thousands of locations worldwide
    1. 3505/CDO sample button Variable pricing depends on data amount. Online: $3 and up, Offline: $140 and up.
    2. 3505 FTP data access   Free Access to complete dataset, archival format only.
    Additional Information: Metadata/Software   Station History   DVD   QC   Offline
    top button Back to the topPeriod of record: 1901 - Current

    Free Data B:
    Regional Climate Center & National Weather Service Products
    Description: Regional Climate Center & National Weather Service online products
    1. RCC/NWS Products   FREE! for online viewing
    Additional Information: Offline
    top button Back to the topClimate products from NOAA RCC & NWS

    Free Data C:
    COOP Data/Record of Climatological Observations, U.S.
    Description: daily temperature & precipitation data for thousands of U.S. locations
    1. Individual Station Original sample button FREE! Original forms.
    2. Individual Station Preliminary sample button FREE! Preliminary data.
    3. Individual Station sample button $2 per station month.
    Additional Information: Certified Data    COOP Observers   Offline
    top button Back to the topOnline period of record: 1800s to current

    Free Data D:
    1971-2000 U.S. Climate Normals Products
    Description: long-term climatic averages & extremes for U.S. locations
    1. CLIM 20 Station Summaries sample button Free! Climatography of the U.S. #20. Also available on CD-ROM.
    2. CLIM 81 Monthly Normals sample button Free! Climatography of the U.S. #81. Also available on CD-ROM.
    3. CLIM 81 Supplement 1   Free! Climatography of the U.S. #81 Supplement 1 - Monthly Precipitation Probabilities
    4. CLIM 81 Supplement 2   Free! Climatography of the U.S. #81 Supplement 2 - Annual degree days to selected bases
    5. CLIM 84 Daily Normals sample button Free! Climatography of the U.S. #84. Also available on CD-ROM.
    6. CLIM 85 Divisional Normals   Free! Climatography of the U.S. #85, Or purchase hardcopy by mail.
    7. HCS 4-1, 4-2 and 4-3   Free! Historical Climatology Series 4-1, 4-2 and 4-3.
    8. HCS 5-1, 5-2 and 5-3   Free! Historical Climatology Series 5-1, 5-2 and 5-3. Updates to 5-1 and 5-2.
    Additional Information: Subscription    Offline
    top button Back to the top1971-2000 Normals Products Page

    Free Data E:
    Climate Maps of the United States
    Description: various long-term climatic data depicted on U.S. maps
    1. CLIMAPS - PDF or ESRI sample button FREE! For online viewing.
    2. Selected Maps Publication   $10 for published set of 20 maps.
    Additional Information: CD-ROM version   Documentation   Offline
    top button Back to the topPeriod of record: 1961 - 1990

    Free Data F:
    Storm Data Publication/Database
    Description: severe weather reports on damages, injuries, deaths, etc. for U.S. locations
    1. Storm Data (final) sample button FREE online, Offline $8 per month
    2. NCDC Storm Events Database   FREE search engine tool for severe weather events by location.
    Additional Information: DVD   Offline
    top button Back to the topOnline period of record: 1950 - Current

    Free Data G:
    Hourly Precipitation Data Publication
    Description: collection of hourly precipitation data for many locations within a U.S. state
    1. Individual Monthly Issue sample button FREE online, Offline: $7 per state-month, service and handling charges apply to offline orders.
    2. Individual Annual/Dec. Issue   FREE online, Offline: $7 per state-year, service and handling charges apply to offline orders.
    Additional Information: DVD   Offline
    top button Back to the topPeriod of record: 1951 - Current

    Free Data H:
    Climatic Wind Data for the U.S. through 1996
    Description: Climatic wind data from NCDC's LCD publication, U.S. Air Force climatic briefs, etc.
    1. Climatic Wind Data (online)   FREE! PDF copy for online viewing/download
    2. Climatic Wind Data (by mail)   $10 per hard copy of publication received by mail
    Additional Information: Offline
    top button Back to the topPeriod of record: 1930 - 1996

    Free Data I:
    Comparative Climatic Data Publication
    Description: Climatic averages & extremes for major U.S. cities
    1. Comparative Climatic Data sample button FREE! For online viewing. Hardcopy (ordered offline) $5.
    Additional Information: Offline
    top button Back to the topPeriod of record: varies by station

    Free Data J:
    SRRS Weather Maps/Charts
    Description: Surface, upper air & ocean-based analyses & forecast maps, etc.
    1. SRRS Weather Maps sample button FREE! for online viewing
    Additional Information: Define chart terms   Offline
    top button Back to the topPeriod of record: January 2001 - Current

    Free Data K:
    Historical Significant Events Imagery
    Description: satellite imagery photographics during a wide selection of historically significant dates & times
    1. HSEI Most Popular sample button Image View/Download: FREE!; Prints: Variable pricing ($5 and up)
    2. HSEI Posters sample button $18 per poster
    Additional Information: Quick Search   Help/Links   Offline
    top button Back to the topPeriod of record: 1960 - Current

    Free Data L:
    Heating/Cooling Degree Day & Temperature/Precipitation Updates
    Description: Monthly heating/cooling degree days, temperature & precipitation (state, regional & national)
    1. HCS 5-1 Updates (HDD)   FREE! Online PDF copy for online viewing/download
    2. HCS 5-2 Updates (CDD)   FREE! Online PDF copy for online viewing/download
    Additional Information: Offline
    top button Back to the topPeriod of record: 1992 - Latest

    Free Data M:
    Surface Data - Global Summary Of The Day
    Description: Global daily climatic data
    1. Global Summary Of The Day sample button FREE for online viewing/download
    Additional Information: Format
    top button Back to the topPeriod of record: 1929 - Current

    Free Data N:
    Climates of the World, HCS 6-4
    Description: Monthly & annual worldwide climatic data presented in tabular form & on map.
    1. HCS 6-4   FREE! For online viewing. Hardcopy (ordered offline) $3.
    Additional Information: Offline
    top button Back to the topPeriod of record: 1931 - 1960

    Free Data O:
    U.S. Historical Climatology Network
    Description: Monthly maximum, minimum & mean temperature & precipitation for over 1200 U.S. locations
    1. USHCN sample button FREE! for online viewing/download
    Additional Information: Format   Offline
    top button Back to the topPeriod of record: 1900 - 1995

    Free Data P:
    Surface Data - Global Historical Climate Network (GHCN) Version 2
    Description: Global surface database of monthly temperature, precipitation & pressure
    1. GHCN Version 2 sample button FREE for online viewing/download. Offline $80 & up
    Additional Information: Offline
    top button Back to the topPeriod of record: 1697 - Current

    Free Data Q:
    Freeze/Frost Data (CLIM20 Supp. 1)
    Description: Freeze/frost probability tables for selected U.S. locations. Additional details in the documentation link below.
    1. Freeze/Frost Data sample button FREE! for online viewing/download
    Additional Information: Documentation   Station List   Offline
    top button Back to the topPeriod of record: 1970 - 2000

    Free Data R:
    NCDC Web Page Resources
    Description: Additional miscellaneous information on the NCDC web site
    1. Climate Monitoring sample button FREE! NCDC's Climate Monitoring reports & products
    2. Extreme Weather/Events sample button FREE! NCDC's Extreme Weather & Climate Events page
    3. NEXRAD Images sample button FREE! NCDC's National Mosaic Reflectivity Image page
    4. Products & Services Guide   FREE! Online/FREE! Offline ($5 service/handling charge applies)
    5. Conversion/Decoder Charts   FREE! NCDC's most popular conversion & decoder charts
    6. EIS Series   FREE! Online/FREE! Offline ($5 service/handling charge applies)
    7. Rainfall Frequency Atlas   FREE! NCDC's Rainfall Frequency Atlas of the U.S. page
    8. Climatic Data/FPSF   FREE! Climatic data for frost protected shallow foundations (FPSF)
    9. User Engagement Activities   FREE! Sector specific resources for climate sensitive users
    Additional Information:    Offline
    top button Back to the topOther WWW resources/related sites

    Most Requested | Publications | Digital Files | RADAR | CD-ROMs/DVDs | Free Data | Subscriptions