What's new at PRISM

Time series datasets prior to 1981 use whatever station networks and data sources are available for the relevant period. See PRISM datasets for more information; the data available from this page is "AN" (monthly). Note that individual grids contain inhomogeneities due to station equipment and location changes, stations openings and closings, and varying observation times. These datasets should be considered "stable" (unlikely to change until a major version change). For information on when the grids were most recently updated, see calendar of PRISM data updates.

Any known issues with the PRISM time series datasets are documented in the Known Issues section.