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Month <br />2005 <br />2006 <br />2007 <br />2008 <br />Range ( °F) <br />Mean <br />Range ( ° F) <br />Mean <br />Range ( °F) <br />Mean <br />Range ( ° F) <br />Mean <br />Min <br />I Max <br />( ° F) <br />Min <br />I Max <br />( ° F) <br />Min <br />I Max <br />( ° F) <br />Min <br />I Max <br />( ° F) <br />January <br />2.9 <br />26.6 14.7 <br />3.3 <br />25.5 14.4 <br />-12.5 <br />17.4 2.5 <br />-7.7 <br />22.0 <br />7.2 <br />February <br />-1.6 <br />27.6 13.0 <br />-7.0 <br />25.0 9.0 <br />7.4 <br />32.9 20.2 <br />2.5 <br />27.0 <br />14.8 <br />March <br />9.8 <br />37.5 23.7 <br />12.6 <br />40.6 26.6 <br />13.6 <br />42.6 28.1 <br />3.5 <br />34.2 <br />18.9 <br />April <br />22.5 <br />_ <br />53.7 38.1 <br />23.9 <br />57.0 40.4 <br />23.1 <br />54.1 38.6 <br />17.0 <br />46.6 <br />31.8 <br />May <br />31.1 <br />62.5 46.8 <br />31.2 <br />_ <br />65.6 48.4 <br />30.6 <br />63.4 47.0 <br />30.1 <br />59.3 <br />44.7 <br />June <br />37.3 <br />69.3 53.3 <br />37.8 <br />76.4 57.1 <br />36.5 <br />74.0 55.3 <br />35.0 <br />70.7 <br />52.9 <br />July <br />42.5 <br />81.4 61.9 <br />46.9 <br />80.0 63.5 <br />45.5 <br />82.2 63.9 <br />42.3 <br />79.6 <br />61.0 <br />August <br />40.9 <br />74.8 57.9 <br />42.8 <br />76.1 59.5 <br />46.1 <br />78.8 62.4 <br />41.4 <br />76.4 <br />58.9 <br />September <br />33.5 <br />_ <br />71.3 52.4 <br />30.7 <br />64.1 47.4 <br />36.2 <br />70.5 53.3 <br />32.1 <br />69.2 <br />50.7 <br />October <br />27.3 <br />57.2 42.3 <br />23.9 <br />52.1 38.0 <br />24.8 <br />_ <br />56.9 40.9 <br />22.5 <br />_ <br />57.7 <br />40.1 <br />November <br />15.2 <br />40.7 27.9 <br />14.0 <br />43.1 28.6 <br />12.3 <br />45.3 28.8 <br />17.1 <br />43.9 <br />30.5 <br />December <br />1.3 <br />24.7 13.0 <br />1.9 <br />27.3 14.6 <br />3.4 <br />24.9 14.2 <br />5.5 <br />29.7 <br />17.6 <br />2009 <br />2010 <br />2011 <br />Month <br />Range ( °F) <br />Mean <br />Range ( °F) <br />Mean <br />Range ( ° F) <br />Mean <br />Min <br />I Max <br />( ° F) <br />Min <br />f Max <br />( ° F) <br />Min <br />I Max <br />( ° F) <br />January <br />6.9 <br />30.2 18.5 <br />-3.3 <br />22.9 9.8 <br />-0.1 <br />24.6 12.2 <br />February <br />6.2 <br />33.5 19.9 <br />-4.3 <br />_ <br />26.4 11.2 <br />-1.6 <br />26.8 12.6 <br />March <br />15.3 <br />43.5 29.4 <br />_ <br />9.4 <br />39.7 24.5 <br />15.9 <br />41.7 28.8 <br />April <br />21.1 <br />49.1 35.1 <br />24.1 <br />51.5 37.8 <br />24.0 <br />_ <br />48.8 36.4 <br />May <br />34.0 <br />_ _ <br />63.9 49.0 <br />_ <br />29.8 <br />_ <br />58.2 44.0 <br />30.4 <br />_ <br />56.3 43.3 <br />June <br />38.2 <br />_ <br />66.9 52.6 <br />39.1 <br />_ <br />72.7 55.9 <br />37.5 <br />_ <br />71.3 54.4 <br />July <br />41.1 <br />_ <br />76.8 59.0 <br />45.1 <br />78.6 61.9 <br />46.5 <br />76.8 61.6 <br />August <br />38.3 <br />75.8 57.1 <br />44.0 <br />76.5 60.2 <br />43.4 <br />79.0 61.2 <br />September <br />33.4 <br />69.9 51.7 <br />_ <br />33.5 <br />72.4 53.0 <br />35.5 <br />68.4 52.0 <br />October <br />22.4 <br />_ _ <br />50.8 36.6 <br />27.8 <br />_ <br />57.8 42.9 <br />25.7 <br />_ _ <br />54.9 40.3 <br />November <br />_ <br />13.1 <br />_ _ <br />45.8 29.5 <br />13.8 <br />_ <br />38.7 26.3 <br />13.0 <br />_ _ <br />38.3 25.6 <br />December <br />-4.7 <br />22.3 8.8 <br />13.0 <br />_ <br />34.7 23.9 <br />1.7 <br />28.2 15.0 <br />TR- Permit M -1977 -342 <br />Environmental Protection Plan <br />Table 6. Henderson Mill Temperature Data (from WRCC Williams Fork Dam Station) <br />Climax Molybdenum Company <br />Henderson Operations <br />Climate data obtained from the Western Regional Climate Center (www.wrcc.dri.cdL ). <br />