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<br />FIGURE 2-3: Climatic maps of the Pacific Mountain System. <br /> <br /> <br />60 <br /> <br />A. Average Annual <br />Temperature <br /> <br />e-J. '.~ <br />... . : <br />t",...t. _ <br />~ I . <br />1-20,. : ' <br />t~ ..~ <br /> <br /> <br />E. Average Annual <br />Snowfall (inches) <br /> <br />B. Average Annual <br />Precipitation (inches) <br /> <br /> <br />t, <br />I.' . <br /> <br />.,...., .- <br />~40 <br /> <br />{ .. <br />~/ 10 <br /> <br /> <br />F. Average Annual <br />Number of Days <br />with Dense Fog <br /> <br />120-160 · <br /> <br />C. Average Relative <br />Humidity, Noon, <br />July <br /> <br /> <br />. <br /> <br />t <br /> <br />80-120 <br /> <br /> <br />G. Average Number <br />of Cloudy Days <br /> <br />Thunderstorms, <br />5-10; <br />Hail, <br />1-2 <br /> <br />D. Average Annual <br />Number of Days <br />with Thunderstorms <br />and Hail <br /> <br /> <br />.... <br />~ <br />~ . . <br />....J <br />1.""""- <br />. , <br />I '" <br />. <br />\. <br />.... - <br /> <br /><100 <br /> <br />. -,. 100-200 <br /> <br /> <br />H. Average Length <br />of Frost Free <br />Period (Days) <br /> <br />From: C.B. Hunt, Physiography of the United States; W.H. Freeman and Co., 1967. <br /> <br />2-5 <br />