PRISM time series datasets are available for daily data (1981-present), monthly data (1895-present), and annual data (1895-present). These datasets use all of the station networks and data sources ingested by the PRISM Group (version AN, for "all networks), not just those that have existed for long periods of time.
PRISM time series datasets are re-modeled multiple times within a rolling 6-month window (7 times for monthly data, 8 times for daily data) and are considered stable after 6 months. See our PRISM Datasets document for more information, and our calendar of dataset updates for exact timing. We also provide web services and an FTP repository that can help automate the fetching and updating of PRISM datasets to the latest versions.
Note that individual grids contain inhomogeneities due to station equipment and location changes, stations openings and closings, and varying observation times. Please review the data usage conditions and disclaimers in our terms of use.
To download PRISM data in bulk, see our FTP and web services documentation.
