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Min T. 12.1 15.3 20.7 28.9 38.6 47.6 53.4 51.7 43.3 32.2 21.0 14.1 <br />Max T. 46.4 52.9 61.5 71.8 81.1 91.4 96.2 93.7 86.0 74.2 58.1 48.6 <br />Exhibit "K" <br />6.4.11 Climate: <br />The general site climate is taken from the NRCS Ecological Site Descriptions R069XY006CO and <br />R069XY03000 and was based on climatic records from 1922 to 2001. <br />The mean average annual precipitation varies from 10 to inches per year depending on location and <br />ranges from 5 to over 24 inches per year. Approximately 75 percent of the annual precipitation occurs <br />during the growing season from mid -April to late- September. Snowfall can vary greatly from year -to- <br />year and can range from 20 to 40 inches per year. Winds are estimated to average about 6 to 7 miles <br />per hour annually. Daytime winds are generally stronger than nighttime and occasionally strong storms <br />may bring brief periods of high winds with gusts to more than 60 miles per hour. <br />The average length of the growing season is 155 days, but varies from 147 to 162 days. The average <br />date of first frost in the fall is October 10, and the last frost in the spring is about May 5. July is the <br />hottest month and January is the coldest. It is not uncommon for the temperature to exceed 100 <br />degrees F. during the summer. Summer humidity is low and evaporation is high. The winters are <br />characterized with frequent northerly winds, producing severe cold with temperatures dropping to as <br />low as -35 degrees F. <br />Minimum Maximum <br />Frost -free period (days): 147 162 <br />Freeze -free period (days): 169 186 <br />Mean annual precipitation. (inches): 10.0 14.0 <br />Mean Monthly Precipitation (P) (inches) and temperature (T) (Degrees F): <br />Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec <br />Min P. .027 0.14 0.25 0.73 0.9 0.83 2.34 1.62 1.04 0.78 0.49 0.27 <br />Max P. 0.28 0.36 0.68 1.16 2.21 1.79 2.38 2.0 1.12 0.9 0.51 0.43 <br />