PRISM data notices are issued when changes or updates are made to PRISM dataasets. The list below provides links to archived PRISM data notices.

• 2025-10-01 -- PRISM data format, structure, and availability changes; website updates
• 2025-09-15 -- Extra revision of Jan-Feb 2025 precipitation grids
• 2025-03-27 -- PRISM 800m Data
• 2025-02-24 -- Corrected Monthly tdmean Grids


• 2024-02-01a -- Daily normals (1991-2020) now available
• 2024-02-01b -- Adjusted 1991-2020 monthly normals now available


• 2023-03-16 -- Daily Map Graphics Generator


• 2022-12-15 -- Updated 1991-2020 Normals
• 2022-02-08 -- Precipitation redo for July 2021 - January 2022


• 2021-12-01a -- New 1991-2020 normals now available
• 2021-12-01b -- Upcoming changes to the daily and monthly time series
• 2021-10-28 -- Phasing Out ASCII GRID Format


• 2020-11-25 -- Updated February 1982 daily and monthly grids for tmax, tmin, tmean, tdmean, vpdmin, and vpdmax
• 2020-08-03 -- New 2019 daily and monthly grids for all variables


• 2019-10-29 -- New dataset version for all elements except precipitation


• 2017-02-21 -- Some PRISM precipitation grids have been replaced to fix a consistency issue