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Climatological Information <br />• Based on the Environmental Analysis, No. CO-010-0-183 <br />prepared by the BLM (see Appendix H}, the climate in the Walden <br />area is characterized by long, cold winters, short, cool summers, <br />low precipitation, and a short growing season. <br />The average annual temperature at Walden, Colorado is 37.1oF. <br />The average temperature of the warmest month, July is 56.9°F, and <br />of the coldest month, January is 16.0°F. The average annual <br />precipitation at Walden is 10 inches. Precipitation amounts <br />increase in the area as the elevation increases. Since the site <br />is at a slightly higher elevation, the precipitation is estimated <br />to be between 11 and 12 inches per annum. Approximately 508 of <br />the precipiration occurs as snow. The average annual frost-free <br />period is 40 days. <br />The prevailing winds are from the west with a moderate velocity. <br />The peak wind period is generally between 12:00 noon and 6:00 p.m. <br />. Inversions are commonly occuring weather phenomenon in North Park <br />and can be expected to occur approximately 808 of the time, <br />generally during the morning. In the summer, the inversions will <br />disperse by late morning but in the winter they may remain for <br />several days. Enclosed in Appendix G is the climatological infor- <br />mation gathered by Colorado State University. <br />J <br />