Climate of the Virgin River Basin

Climate data from NOAA/NWS Co-op Network stations are complied in Table 6.6-1 and the locations are shown on Figure 6.6-3.  Figure 6.6-3 also shows precipitation contour data from the Spatial Climate Analysis Service (SCAS) at Oregon State University.  The Virgin River Basin does not contain Evaporation Pan, AZMET or SNOTEL/Snowcourse stations.  More detailed information on climate in the planning area is found in Section 6.0.3. A description of the climate data sources and methods is found in Volume 1, Appendix A.

NOAA/NWS Coop Network

• Refer to Table 6.6-1A

• Temperatures at the one NOAA/NWS Co-op Network station range from an average annual high of 89.5°F in July to an average annual low of 45.5°F in January.

• The highest average seasonal rainfall occurs in the winter season (January-March) when 40% of the annual rainfall occurs. Average annual rainfall is 7.59 inches.

SCAS Precipitation Data

• See Figure 6.6-3
• Additional precipitation data shows average annual rainfall as high as 16 inches in the eastern portion of the basin and as low as four inches in the western portion of the basin.

Click for Figure 6.6-3 Virgin River Basin

Meteorological Stations and Annual Precipitation

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