PRISM Monthly Spatial Climate Dataset AN81m (OREGONSTATE/PRISM/AN81m)

The PRISM daily and monthly datasets are gridded climate datasets for the conterminous United States, produced by the PRISM Climate Group at Oregon State University.

Grids are developed using PRISM (Parameter-elevation Regressions on Independent Slopes Model). PRISM interpolation routines simulate how weather and climate vary with elevation, and account for coastal effects, temperature inversions, and terrain barriers that can cause rain shadows. Station data are assimilated from many networks across the country. For more information, see the Descriptions of PRISM Spatial Climate Datasets.


  • Warning, this dataset should not be
    used to calculate century-long climate trends due to non-climatic
    variations from to station equipment and location changes, openings
    and closings, varying observation times, and the use of relatively
    short-term networks. Please see the dataset

    for more details.
  • It takes time for observation networks to conduct quality control
    and release station data. Therefore, PRISM datasets are re-modeled
    several times until six months have elapsed, when they are
    considered permanent. A release schedule is
  • For use of the 30 arc-second (~800 m) version of this dataset
    please contact the provider at
NameDescriptionGee Unit
pptMonthly total precipitation (including rain and melted snow)mm
tmeanMonthly average of daily mean temperature (calculated as (tmin+tmax)/2)°C
tminMonthly minimum temperature°C
tmaxMonthly average of daily maximum temperature°C
tdmeanMonthly average of daily mean dew point temperature°C
vpdminMonthly average of daily minimum vapor pressure deficithPa
vpdmaxMonthly average of daily maximum vapor pressure deficithPa


PRISM / OREGONSTATE (producer, licensor)
Google Earth Engine (host)
STAC Version 0.6.0
Keywords PRISM, climate, geophysical, monthly, monthly, oregonstate, precipitation, pressure, temperature, vapor, weather
License proprietary
Temporal Extent 12/31/1894, 4:00:00 PM - now
Citation [Daly, C., Halbleib, M., Smith, J.I., Gibson, W.P., Doggett, M.K., Taylor, G.H., Curtis, J., and Pasteris, P.A. 2008. Physiographically-sensitive mapping of temperature and precipitation across the conterminous United States. International Journal of Climatology, 28: 2031-2064](
Type image_collection
GSD arc minutesm
Cadence month
Asset schema {"name":"PRISM_CODE_VERSION","description":"List of code versions per-band, e.g: the first element is for the first band \"ppt\", the second element is for the second band \"tmean\"","type":"STRING_LIST"},{"name":"PRISM_DATASET_CREATE_DATE","description":"List of original creation dates per-band","type":"STRING_LIST"},{"name":"PRISM_DATASET_FILENAME","description":"List of original filenames for each band","type":"STRING_LIST"},{"name":"PRISM_DATASET_TYPE","description":"List of dataset types per-band","type":"STRING_LIST"},{"name":"PRISM_DATASET_VERSION","description":"List of dataset versions per-band e.g: D1 or D2 for daily products; M1, M2 or M3 for monthly products.","type":"STRING_LIST"},{"name":"status","description":"Data generated within 30 days of observation have the status \"early\". Data generated within 1-6 months of observation may have the status \"provisional\" and data older than 6 months are marked as \"permanent\".","type":"STRING"}