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Securing Arizona's Water Future
Climate of the San Rafael Basin

Climate data from a NOAA/NWS Co-op Network station are complied in Table 3.12-1 and the location is shown on Figure 3.12-3.  Figure 3.12-3 also shows precipitation contour data from the Spatial Climate Analysis Service (SCAS) at Oregon State University.  The San Rafael Basin does not contain Evaporation Pan, AZMET and SNOTEL/ Snowcourse stations.  More detailed information on climate in the planning area is found in Section 3.0.3.  A description of the climate data sources and methods is found in Volume 1, Appendix A. For a link to the web site for each climate data source click its header.

NOAA/NWS Co-op Network

  • There is one NOAA/NWS Coop network climate station in the basin at San Rafael Ranch with an average monthly maximum temperature of  74.1°F and average minimum temperature of 42.6°F.

  • Annual average precipitation is 17.26 inches and most precipitation, 10.60 inches on average, occurs in the summer season.  Summer precipitation is more than three times that of any other season.

SCAS Precipitation Data

  • Other precipitation data shows rainfall as high as 38 inches at the Huachuca Mountains along the eastern basin boundary and as low as 18 inches in the San Rafael Valley. 

Click to view Table 3.12-1

Click to view Table 3.12-1 Climate Data for the

San Rafael Basin

Click to view Figure 3.12-3

Click to view Table 3.12-3 San Rafael Basin Meteorological Stations and Annual Precipitation

 

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