Please note: WMM 2025 software is now available for Windows, Linux, and as a Graphical User Interface (GUI).
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.
The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.
Please note: Due to a system outage, NCEI Users should expect delays accessing many datasets. We are working to resolve these issues as soon as possible. We apologize for any inconvenience.