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

Located in Multnomah County, Oregon, Bonneville Dam is at an elevation of 62 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....... 43.3 47.4 54.3 60.1 67.0 72.7 79.3 80.0 74.7 63.8 51.0 43.8 61.5 Average Low........ 32.4 34.4 37.3 41.2 46.5 51.5 56.0 56.1 52.3 46.1 39.5 33.9 43.9 Monthly Precipitn..11.20 9.83 7.96 6.02 3.96 3.01 1.03 1.35 3.02 5.73 12.09 12.77 77.97 Heating Degree Days 842 676 595 432 262 121 33 29 107 314 592 811 4814 Cooling Degree Days 0 0 0 0 6 35 115 123 61 3 0 0 343 

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