I am looking for annual precipitation maps for Minnesota and South Dakota. Preferably in a raster or polygon format. Basically, something I can spatially tie to data in a large database. I have been on NOAA, USGS, and several other sites that typically have this type of data, but I'm not having much luck. Any ideas?

  • May not be adequate to your purposes, but it looks like you can get precip tables from NOAA and turn them into rasters using gda_grid.
    – Rob Skelly
    Commented Jan 11, 2016 at 17:43

1 Answer 1


I would start with

WCRP GCOS GPCC FDP version7 which is a global gridded land surface analysis of monthly precipitation, The data are monthly values from January 1901 to December 2013 at three spatial resolutions, 0.5°, 1.0°, and 2.5° lat/lon.

This link provides a meta list of rainfall datasets, http://fsg.afre.msu.edu/gis/rainfall.html.

Noaa daily data is at, ftp://ftp.cpc.ncep.noaa.gov/GIS/GRADS_GIS/GeoTIFF/GLB_DLY_PREC/

Another meta list is at, http://www.esrl.noaa.gov/psd/data/gridded/tables/precipitation.html

NOAA has these data. I apologize for a list of links but just so many sources exist.

WorldClim is a set of global climate layers (climate grids) with a spatial resolution of about 1 square kilometer. The data can be used for mapping and spatial modeling in a GIS.

Do not forget our cousin open data site at https://opendata.stackexchange.com/

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.