PRISM Long-Term Average Climate Dataset Norm81m [deprecated]

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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.


4638.3 meters


Name Units Min Max Description
ppt mm 0.03* 1046.09*

30 Year average of monthly total precipitation (including rain and melted snow)

tmean °C -16.15* 37.88*

30 Year average of monthly mean temperature (calculated as (tmin+tmax)/2)

tmin °C -21.9* 29.79*

30 Year average of monthly minimum temperature

tmax °C -10.78* 46.63*

30 Year average of monthly maximum temperature

tdmean °C -19.07* 25.22*

30 Year average of monthly mean dew point temperature

vpdmin hPa 0* 33.11*

30 Year average of monthly minimum vapor pressure deficit

vpdmax hPa 0.37* 94.11*

30 Year average of monthly maximum vapor pressure deficit

* estimated min or max value

Image Properties

Image Properties

Name Type Description

List of original creation dates for each band, e.g: the first element is for the first band "ppt", the second element is for the second band "tmean"


List of dataset types per-band


List of code versions per-band


List of original filenames per-band

Terms of Use

Terms of Use

These PRISM datasets are available without restriction on use or distribution. PRISM Climate Group does request that the user give proper attribution and identify PRISM, where applicable, as the source of the data.


  • 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 doi:10.1002/joc.1688 pdf

  • [Daly, C., J.I. Smith, and K.V. Olson. 2015. Mapping atmospheric moisture climatologies across the conterminous United States. PloS ONE 10(10):e0141140. doi:10.1371/journal.pone.0141140.

Explore in Earth Engine

var dataset = ee.ImageCollection('OREGONSTATE/PRISM/Norm81m');
var precipitation ='ppt');
var precipitationVis = {
  min: 0.0,
  max: 300.0,
  palette: ['red', 'yellow', 'green', 'cyan', 'purple'],
Map.setCenter(-100.55, 40.71, 0);
Map.addLayer(precipitation, precipitationVis, 'Precipitation');