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Climate of the Duncan Valley Basin

Climate data from a NOAA/NWS Co-op Network station is complied in Table 3.7-1  and the location is shown on Figure 3.7-3.  Figure 3.7-3 also shows precipitation contour data from the Spatial Climate Analysis Service (SCAS) at Oregon State University. The Duncan Valley Basin does not contain Evaporation Pan, AZMET and SNOTEL/Snowcourse stations.  More detailed information on climate in this basin 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

  • Refer to Table 3.7-1A.
  • There is one NOAA/NWS Co-op network station in the basin at Duncan located at 3,660 feet.  The average maximum temperature at the station is 80.2°F and average minimum temperature is 41.3°F.

  • The highest seasonal precipitation at this station, 5.50 inches, occurs in the summer (July-September) and the lowest, 1.00 inches, occurs in the spring (April-June).


SCAS Precipitation Data

  • Other precipitation data shows rainfall as high as 20 inches in the Peloncillo Mountains and as low as 10 inches in the vicinity of Duncan.

  • This basin contains the smallest variation in precipitation in the planning area, only 10 inches separates the areas of highest average annual precipitation from the lowest.

Click to view Table 3.7-1

Click for Table 3.7-1 Climate Data for the

Duncan Valley Basin

Click to view Figure 3.7-3

Click for Figure 3.7-3 Duncan Valley Basin

Meteorological Stations and Annual Precipitation


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