Arrowrock Dam
Weather Station of the U.S. Weather Service

Located in Elmore County, Idaho, Arrowrock Dam is at an elevation of 3275 feet and was established as a weather station on 01 Jul 1948.

From 1971 to 2000, the following average readings were recorded:

 - - - - - - - - - JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC YEAR Average High....... 34.7 41.5 50.9 60.3 69.6 79.4 89.2 89.0 77.6 63.8 45.3 35.4 61.4 Average Low........ 21.3 24.9 31.2 36.7 43.5 50.5 56.8 56.2 46.9 37.8 29.8 22.4 38.2 Monthly Precipitn.. 2.87 2.43 2.01 1.52 1.41 .95 .40 .33 .85 1.07 2.70 2.96 19.50 Heating Degree Days 1147 891 742 495 278 102 17 19 153 442 824 1118 6228 Cooling Degree Days 0 0 0 0 16 100 266 254 70 2 0 0 708 

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