NCEI's land-based (in situ) datasets are developed from data collected across the United States and globally. Data availability varies by data type and station, and some have periods of record of more than a century.
Any data product ordered from NCEI 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 NCEI.
Access Tools
Climate Normals Quick Access
The U.S. Climate Normals Quick Access tool provides graphs and tables of average temperature, precipitation, and snowfall at more than 15,000 U.S. observation stations.
Climate at a Glance
Historical and spatial comparisons of local, county, state, regional, national, and global meteorological data to determine trends and patterns.
Climate Data Online
Climate Data Online (CDO) provides free access to NCEI's archive of global historical weather and climate data in addition to station history information.
Weather and Climate Data Access
Find and download historical weather, climate, and other environmental data from NCEI's most popular datasets.
Past Weather
Search for recent weather data in your area. Weather forecasts are available through the National Weather Service.